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

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.

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