Hello all!

New to this forum but hoping someone may be able to offer some help here!

Recently my 2018 ford mustang has been having a musty type smell in it. I come to find that the floorboards behind the passengere seat are damp. (Car sits inside of a garage and no leaks from garage ceiling). After some research it sounds like it could be some issues with the AC drain but I took it in today and they couldn't locate the problem. I checked the seals around the windows and haven't seen any...

Damp Floorboards Behind Passenger Seat