I have a stinky car and suspect that the ac drain is clogged and pooling water that is getting skunky. Also the windows fog real quickly when the blower is turned on. I changed the cabin air filter weeks ago and it did not help. Today I used BG FrigiFresh (?) and sprayed it in the outside air intake, removed the filter and blower motor cover and sprayed it in there with the ac running. It seemed to help. BUT, I never get any water on the ground when the AC is running. I suspect the drain is clogged but do not know where to look for it since there is no spot of water on the ground to locate above on the car where it is coming from. Where is the stupid drain???