A mysterious, invisible pocket of air that one enters while walking or driving that smells especially horrifying and rank compared environment one was walking or driving through just moments before.
sniff, sniff: "What is that awful stench?"
"Tough it out, I think we're just in a smell pocket."
7π 1π
Mom: What is that smell? *Pokes around and leaves*
Friend: Dude, that was close.
Son: Yeah, she must have been smelling my pocket.
Unclean, neglected, and a little reminiscent of butt
βThis rug has a little bit of a back pocket smellβ