I've had this "symptom" for over a month and am beginning to think it may be my A/C? Can air conditioning smell? A rancid kind of smell? I have had my car detailed, scrubbed my garage in case it's picking up a foul smell from rotting anything in the car or garbage cans in the garage. I live in a hot climate. I don't ever recall having a smelly a/c in my life before. I should add, the A/C cools the car fine and the smell only lasts it seems about 5-10 seconds. But still it's concerning me.