Originally Posted by The Grim One
There is a product made by BG called Frigi- Fresh just spray it in your cowl vents and the smell goes away.
For mild cases, Frigi-Fresh is what many dealers use.
There is a full foam treatment/cleaner that requires drains, etc. for severe cases.
Best place to spray is if you can get it down into the A/C unit itself... by going down the shortest input or output path.
Stuff is cheap, easy to use.