Help Would I need to seal my car if I were to commit suicide using H2S method?

[Syriancel]

What materials should I use to seal the car?

 

[Jello Biafra]

H2S is highly toxic to rescue personnel and anyone in the area.

Further, there are reports of people here failing with this method, and describing it as feeling like your body is being burned from the inside.

Not only do you need to fully seal everything, you need to put signs in the window "Dangerous H2S gas. Do Not Enter" or something like that.

I would not suggest this method - it is too dangerous to other people.