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SoulWantsHome

Member
Aug 6, 2025
11
Hello, people. I'm new here.

I intend to commit suicide by the use of nitrogen-gas and an oxygen-mask (which has 2 valves at the top of the nose, for removing carbon-dioxide).

I bought the "Max Dog Nitrogen Kit" years ago (which is a kit that consists of a gas-regulator that is set at 15 litres per minute, and that has a connector that's specifically designed for oxygen-mask-tubes and similar tubes), as well as a few oxygen-masks of different sizes.

However, despite that the oxygen-mask will be sealed airtight with tape around my face; I'm still worried about the possibility of sucking oxygen into the oxygen-mask, through the valves, every time I inhale/breath in (as this closes the valves of the oxygen-mask - but at the same time, it might suck a tiny bit of oxygen into the oxygen-mask, right before the valves close).

And this worry of mine, is the primary reason why I recently made an account on this forum, as I fear using this suicide-method until I'm sure of how safe it is (in terms of achieving a successful suicide).



So, does anyone know if the amount of oxygen that is sucked into the oxygen-mask, through the valves, every time I inhale/breathe in; will be enough to keep my body alive during the suicide-attempt? (Which thereby would result in the suicide-attempt being unsuccessful, and me potentially ending up with brain-damage instead.)



Here's an example of what a typical oxygen-mask looks like (although the small, round plates that are supposed to sit on top of the 2 valves, are missing in these pictures):

And here's a picture and some information about the "Max Dog Nitrogen Kit":
 
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_AllCatsAreGrey_

_AllCatsAreGrey_

An existence transfigured by failure.
Mar 4, 2024
696
I don't have much direct knowledge about this, but it makes me think of this podcast episode that Nitschke did reflecting on the nitrogen execution that was done in the US last year that was described by some as a botched execution.


I feel it may overlap to your question as they used a mask to apply the inert gas - although

I hope you're able to find clear answers to address your method concerns.

Re the valves, I would imagine that they work to release gas, but not take in any. But I'm not sure about that
 
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locked*n*loaded

locked*n*loaded

Archangel
Apr 15, 2022
9,117
The pressure from the nitrogen in the mask should keep oxygen from entering when the valves are open for that split second to allow CO2 to exit.
 
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SoulWantsHome

Member
Aug 6, 2025
11
I don't have much direct knowledge about this, but it makes me think of this podcast episode that Nitschke did reflecting on the nitrogen execution that was done in the US last year that was described by some as a botched execution.


I feel it may overlap to your question as they used a mask to apply the inert gas - although

I hope you're able to find clear answers to address your method concerns.

Re the valves, I would imagine that they work to release gas, but not take in any. But I'm not sure about that
Yeah, I've heard about that incident with Kenny Smith. And thanks for the link, it was an interesting listen.

But the problem that occurred in that incident with Kenny Smith, obviously wasn't the fact that they used a face-mask to cause nitrogen-hypoxia. Instead, the problem that occurred in that incident, must have been that they used the wrong type of face-mask; or that the face-mask they used, wasn't doing its job effectively; or that the flow of nitrogen-gas was set too low. Those things result in the carbon-dioxide not being effectively removed from the face-mask, and/or that the person isn't receiving enough air. And both of those resulting things, can, respectively, make the killing-attempt via hypoxia, uncomfortable and/or painful for the person.

And also, as was mentioned in this podcast-episode; Kenny Smith didn't want to die. And therefore, he probably held his breath for as long as possible, in an attempt to prolong his life for as long as possible, when the oxygen-supply was about to be switched off; which thereby would have resulted in the whole process taking much longer for him, than it normally would have taken.



If a person is wearing a face-mask that's completely sealed/airtight, and that also effectively removes all the exhaled carbon-dioxide, while at the same time effectively supplies sufficient amounts of nitrogen-gas or helium-gas; then the face-mask is foolproof, and is extremely effective. And a quick and painless death of the person, is then guaranteed (if the person truly wants to die, and thereby inhales/breaths in the nitrogen-gas or helium-gas, correctly).

And the best types of face-masks to use for this (for private suicides/do-it-yourself-suicides - as opposed to institutionalized, assisted suicides), are full-faced diving-masks - as diving-masks need to be able to perform these things 100% perfectly, deep under water (although they supply oxygen-gas instead of nitrogen-gas or helium-gas, in that context, of course); and full-faced diving masks, don't require the person to have a breathing-piece in the mouth, like normal diving-masks do.

However, full-faced diving-masks, along with its connections to the regulator/gas-tank, are very expensive. And oxygen-masks are both the closest and cheapest alternative to them, that I've found.



PS:

Using an "exit-bag" to commit suicide via hypoxia, seems like a really bad idea, in comparison to using an oxygen-mask to commit suicide via hypoxia. This is because there seems to be a lot more that can go wrong, when constructing and/or using an "exit-bag" to commit suicide via hypoxia, than when using an oxygen-mask to commit suicide via hypoxia.

I've never liked the idea of constructing and/or using an "exit-bag" to commit suicide via hypoxia - due to how many things that can go wrong with that method, and how dangerous it thereby can be.



The pressure from the nitrogen in the mask should keep oxygen from entering when the valves are open for that split second to allow CO2 to exit.
No - because when you inhale/breath in (when having the face-mask on); the suction that is created, first has to go through the outside-air, before it reaches the flexible plates of the valves (which are located on the outside of the face-mask). And this thereby means that a tiny amount of the outside-air, will be sucked into the face-mask, a brief moment right before the flexible plates of the valves close.
 
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locked*n*loaded

locked*n*loaded

Archangel
Apr 15, 2022
9,117
No - because when you inhale/breath in (when having the face-mask on); the suction that is created, first has to go through the outside-air, before it reaches the flexible plates of the valves (which are located on the outside of the face-mask). And this thereby means that a tiny amount of the outside-air, will be sucked into the face-mask, a brief moment right before the flexible plates of the valves close.
Inhaling shouldn't open the valves at all. Why would it? They're CO2 release valves, which opens them by exhaling, and when they do open, the mask is already pressurized by the nitrogen, which will keep any air from the outside from entering while the valves are open. Others have used this type of mask without issue.
 
SadCryingBunny

SadCryingBunny

Member
Apr 10, 2025
41
Yeah, I've heard about that incident with Kenny Smith. And thanks for the link, it was an interesting listen.

But the problem that occurred in that incident with Kenny Smith, obviously wasn't the fact that they used a face-mask to cause nitrogen-hypoxia. Instead, the problem that occurred in that incident, must have been that they used the wrong type of face-mask; or that the face-mask they used, wasn't doing its job effectively; or that the flow of nitrogen-gas was set too low. Those things result in the carbon-dioxide not being effectively removed from the face-mask, and/or that the person isn't receiving enough air to the lungs. And both of those resulting things, can make the killing-attempt via hypoxia, uncomfortable and/or painful for the person.

And also, as was mentioned in this podcast-episode; Kenny Smith didn't want to die. And therefore, he probably held his breath for as long as possible, in an attempt to prolong his life for as long as possible, when the oxygen-supply was about to be switched off; which thereby would have resulted in the whole process taking much longer for him, than it normally would have taken.



If a person is wearing a face-mask that's completely sealed/airtight, and that also effectively removes all the exhaled carbon-dioxide, while at the same time effectively supplies sufficient amounts of nitrogen-gas or helium-gas; then the face-mask is foolproof, and is extremely effective. And a quick and painless death of the person, is then guaranteed (if the person truly wants to die, and thereby inhales/breaths in the nitrogen-gas or helium-gas, correctly).

And the best types of face-masks to use for this (for private suicides/do-it-yourself-suicides - as opposed to institutionalized, assisted suicides), are full-faced diving-masks - as diving-masks need to be able to perform these things 100% perfectly, deep under water (although they supply oxygen-gas instead of nitrogen-gas or helium-gas, in that context, of course); and full-faced diving masks, don't require the person to have a breathing-piece in the mouth, like normal diving-masks do.

However, full-faced diving-masks, along with its connections to the regulator/gas-tank, are very expensive. And oxygen-masks are both the closest and cheapest alternative to them, that I've found.



PS:

Using an "exit-bag" to commit suicide via hypoxia, seems like a really bad idea, in comparison to using an oxygen-mask to commit suicide via hypoxia. This is because there seems to be a lot more that can go wrong, when constructing and/or using an "exit-bag" to commit suicide via hypoxia, than when using an oxygen-mask to commit suicide via hypoxia.

I've never liked the idea of constructing and/or using an "exit-bag" to commit suicide via hypoxia - due to how many things that can go wrong with that method, and how dangerous it thereby can be.




No - because when you inhale/breath in (when having the face-mask on); the suction that is created, first has to go through the outside-air, before it reaches the flexible plates of the valves (which are located on the outside of the face-mask). And this thereby means that a tiny amount of the outside-air, will be sucked into the face-mask, a brief moment right before the flexible plates of the valves close.
With a full face scuba mask, there is 0% outside air entering through because these are designed to work underwater. OTS Spectrum mask connected to Scubapro A700 regulator through mouthpiece with regulator free flowing at 50L per minute will allow 0% air from the outside in. When mask is full and flowing in, the extra gas will leak from the face skirts or exhaust valve. That means the valve will be constantly exhausting co2 breath build up along with the extra nitrogen/helium gas, chance of oxygen getting through the exhaust valve when it's open due to the constant leak is almost impossible due to the high pressure flow rate from 50L a minute.
 
S

SoulWantsHome

Member
Aug 6, 2025
11
Inhaling shouldn't open the valves at all. Why would it?
Inhaling/breathing in doesn't open the valves of the face-mask. You simply misunderstood what I was saying.



They're CO2 release valves, which opens them by exhaling (...)
Correct.



(...) and when they do open, the mask is already pressurized by the nitrogen, which will keep any air from the outside from entering while the valves are open.
That's the kind of thing that sounds good on the surface - but is actually incorrect when you stop and think about it.

The concept you're suggesting here, is simply physically impossible - when inhaling/breathing in, while wearing an oxygen-mask. And that's what I tried to explain to you, in my previous post above.

The suction that's created by inhaling/breathing in, which closes the valve-plates on the oxygen-mask; also sucks a tiny bit of outside-air into the oxygen-mask in the process. Otherwise, the suction simply wouldn't have been able to reach and close the valve-plates on the oxygen-mask.

You see, the valve-plates on an oxygen-mask closes precisely because the air beneath them is removed (by inhaling/breathing in), which creates a vacuum, which thereby pulls the valve-plates close. And in that process, the outside-air is obviously sucked into the oxygen-mask - because it's precisely that removal of the outside-air (located in the tiny space that exists between the mask's surface and the valve-plates), that actually sucks the valve-plates close.



Others have used this type of mask without issue.
If they have done so - and successfully died from it; then it still doesn't prove the concept you're suggesting. It actually just proves that the tiny amount of outside-air that's sucked into the oxygen-mask, during the closing of the valve-plates, isn't enough to cause any problems for the hypoxia to occur.

So, my question to you is:
Did they use an oxygen-mask for hypoxia, and managed to successfully die from it? (As opposed to just briefly testing the method, without actually dying from it?)



With a full face scuba mask, there is 0% outside air entering through because these are designed to work underwater. OTS Spectrum mask connected to Scubapro A700 regulator through mouthpiece with regulator free flowing at 50L per minute will allow 0% air from the outside in. When mask is full and flowing in, the extra gas will leak from the face skirts or exhaust valve. That means the valve will be constantly exhausting co2 breath build up along with the extra nitrogen/helium gas, chance of oxygen getting through the exhaust valve when it's open due to the constant leak is almost impossible due to the high pressure flow rate from 50L a minute.
Exactly! Those are the reasons I'd prefer using a diving-mask for suicide by hypoxia, if it wasn't so damn expensive. So, thanks for confirming these things.
 
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