similar problem. Dealer sprayed something in to kill bacteria - but it smelled worse than the bacteria (like the little smelly tablets they put in toilets). When that finally stopped smelling, the dealer suggested spraying lysol in the intakes. or you can use a product called "Refrigefresh". I went with the lysol as you can get it in any smell you want. Best I found was the lysol smell that is supposed to smell like freshly ironed clothes (rather than pinetrees, etc.). It worked great. Sprayed in a few times over a day or so and after that smell cleared out the original bacteria smell is gone.