The lingering foul smell that follows a person who has recently evacuated their bowels. Often intensified in confined spaces e.g. on a transatlantic economy classflight.
"I say Reginald, that fellow appears to be dragging an odour around with him since visiting the toilet."
the unpleasant smell on one's fingers or penis after inserting them into an unclean or funky smelling vagina, or smelled just by putting one's face too close to or actually on it
"I went over to the girl's place, and we got into it. Once I got home, I realized I needed to wipe down my steering wheel because it smelled of pussy fumes."