Where can you buy pure Helium?
>>25377497
Try nitrogen.
>>25377523
thats even harder to find
>>25377497
Maybe buying a bunch of c02 tanks in an enclosed space would be better
>>25377497
Why not become a criminal once the suicidal feelings calm down senpai?
>>25377497
Just leave a car running in a closed garage
>>25377858
If you have a old gasoline car without Emission equipment you can die in 5-10 minutes, otherwise it takes a long time or a diesel will do the trick.