I remember once we couldnt figur out who drunk a carton of milk, and ate the pack of raw chicken legs. About a week later, my dad's car was smelling something aweful. The smell was covered by all his paint supplies, so it took a while for us to pick up or the horrific stinch. he cleaned out his care and found the milk and chicken. it wasnt pretty.
My point: make sure you didnt leave it in the car.