Hey I was curious if I was the only one having this issue. My car is an elderly 3 year old model S, but it started doing this as early as a year ago when it was only two. If I put the A/C on recirc the car smells foul, like an old shoe or just musty. It is really bad if it is raining so the humidity is higher. I keep it pretty clean and get it detailed fairly often, it isn't like I have rotten food in there or a gym bag, nothing contained in the car should be doing it. I feel like there is some musty pool condensate somewhere. Thoughts?