Question

What is the gas in human poop that smells

This is a Joke question but I do kinda wanna know, let me know if I'm right is it methane

Answer 1

21% Percent hydrogen
9% carbon dioxide
7% methane
and 4% oxygen.
what makes it stink however is found less then 1%. its called Hydrogen sulfide gas, or mercaptons which contains sulfur, the sulfir is what makes the gastric release (fart) stink.

Answer 2

I'm pretty sure it's just methane, same things in cow farts/poop.