Home › Forums › Stay Dirty Lounge › Service and Repair Questions Answered Here › Bad smell from AC › Reply To: Bad smell from AC October 2, 2020 at 2:19 pm #963972 Richard KirshyParticipant There is a good chance you have growth on the AC coil. You might see if you can remove the in cabin air filter (if so equipped ) and try spraying a disinfectant (solution of water and bleach perhaps) on to the coil itself.