second-hand smoke

the wafting smell from one stall to the next that occurs while moving one's bowels in a public restroom.

"Dude, that is nasty!"

"Yeah bro, and that's just the second-hand smoke you're getting. It's 10 times worse at ground zero."

ground zero

where the dropping of one's bowels occurs. the height of the stink zone.

Dude, that is nasty!

Yeah bro, and you're just getting the second-hand smoke. It's 10 times worse at ground zero.