I have a smell like sweaty feet coming from the vents. Theres nothing wrong with my cabin air filter, and i can spin the blower moter from the outside with my fingers so nothing dead is lodged in there. Thats as far as my diagnostic went. Been hearing of a drain that gets clogged. Not sure where it is, if the car has one or what to do from hear. I want to aviod taking apart the dash and vent system.