So i get home from work today, its about -5 degrees out today. My mom goes to the garage to get something and she comes back and tells me my car smells like gas. I shrug it off thinking she is smelling something else. Later, on the way to the mall to see my g/f I can smell gas coming from my vents(I had the heat on 3)It got pretty bad, smelled like there was an open can of gas about 3 feet away.... I dont know what it could be I tried to think of everything. It is like my car is running super rich, I opened the hood of the car while in the mall parking lot and I smelled gas in there. I could have been because my car was still on though. Also I have noticed my RPM's are unusually low, at a stop sign they dip down into the 500's. Im going to clean my IACV valve in the next couple of weeks could that be the culprit???Anyone have thoughts??? This is really bugging me.. Could it just be the cold weather or what??!!! Any help is appreciated thanks!