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A measure of the stinkiness of a fart, it refers to how much of the "million" parts of air are replaced by farticles.

A fart with higher fpm is stinkier.
"Aww, dude, did you just break wind?"

"It's okay, it was only a few farts per million. You won't even notice."
by Yet Another Josh Cohen May 14, 2008

Words related to farts per million

fart farticle break wind fpm smell stink