Mystery Smell?

I kept smelling a smell on the bed.  Thought the blankets needed washing, since it's been awhile, and you continually sleep in the bed, emanating stink wave after stink wave.  But alas, that was not the entire case.  Part of the smell was your body, but the other...cat poop beside me.  M.U.S.K.y loves me, this I know, for her actions tell me so!