Would a BDSM breathplay gas mask work for inert gas asphyxiation?

[somnia]

I'm at my wits end in life. I have researched everything about exit bags, but I wonder if a BDSM gas mask would work the same? That would make things much more convenient for me. Thank you.

 

[R. A.]

researched everything about exit bags

uh, the most recent version of the PPeHEssentials removed masks altogether from the book after finding even actual supplied air masks not effective for years...