[WangTa]

Ok guys...this is a random post, but I need help because I'm absolutely BAFFLED.

My M has 9,000 miles on it. Looks pretty darn new. However, whenever I turn on the air vents, the smell coming from the vents smells really really strange. Like old pee, animal-nest like. Is it possible a mouse nest is behind the vents? When running AC through front vents, it smells ok...but when I turn on the front defroster - man, it straight up stinks. I have no idea WTH it is.

I've cleaned the inside of the car thoroughly - vacuumed, applied Zano cleaner and leather conditioner (Smelled good until I ran the AC!).

I have no idea what to do or even how to check this. Have any of you guys had this problem? Again, the car looks new inside and out...