My car has been sitting in my garage all winter. Last weekend was warm so I dedided to uncover it and check things out. I notice this smell coming from the front under the hood. It smells like urine but I'm sure nobody peed on my car. Notice the little brown puddle. The liquid is on the floor and has also been on the front bumper in the hole you see in the picture, just under the turn signal light. When I wipe it up, it comes back the next day. I can't find anything dead in my car. Could this maybe be coming from the air conditioning system? Anybody know what is in that part of the car that could produce a foul odor?