Bad smell from ac/heat/circulation
I have not used my heat/ac/or anything that makes air movement in my 1999 WJ for a while.
I used my climate control today to just let some outside air flow into my car, but there was this unpleasant odor.
What is causing this smell and how can I fix it?
(My guess is the bad cabin air filter? Does WJ even have a cabin air filter? I have never ever seen one before!)
Thank you so much for your input!