buses and insects

funny how a bus smells similar to when an insect gets squished. reminded me of this little-black-dot-of-a-creature that used to give out this most obnoxious smell when squished (incidentally, this is what i was doing in some "classes" --tracking/squishing insects :-) ). cant describe either the smell or the insect (didnt have any distinguishing feature beyond just looking like a black dot). but if anyone has any clue what the heck im talking about, id be very curious to know the name of that insect.