I do not think that it the smell from standing water because i have taken the carpets out and washed them with a rug doctor. I have seen the heater coils do that when they go bad or leak but this is not the case. The detail shops around me are a joke i think ozium is even out of thier price range lol

. The smell is deffinayl that of an animal because when removing the carpets and such i found pet hair all over and it had a musty smell to it.
I am not sure on what your talking about as far as the ac goes not unless you are talking about the recirulateing button???
I hope it goes away i have even gotten to the point were i like rolling with the windows down more than turning the ac on
That sucks when its almost 90 degrees everyday.