I have an English conversation class at my apartment each week, and
they tend to bring snacks and drinks.  Last time someone brought a
bunch of flavored senbei, which were pretty good.  A half-finished
open bag of cheese senbei was left on the table at the end.  I don't
use that room for anything except this class, so I didn't even touch
the bag until tonight when I was cleaning up for the class.

BIG mistake.  I picked up the bag to carry it to the trash and was hit
with this horrible rancid cheese stench which now seems to have
permeated my clothes and everything in that room.  And now every time
I open my trash can to throw something away I get hit with that odor
again.  This is honestly one of the worst smells I have ever
experienced (rivals the fertilizer and paper mills in Indiana,
although maybe that's exaggerating a bit).  Ugh.

-Chris