I took my car in to get an oil change & tire rotation. After I got it back there has been a smell coming out of the air vents when the ac is on. It smells like a dirty restroom. I think the someone took a piss down my vents (not really but it does smell like it). Service Mgr said it should go away after I start running the ac regularly. Hasn't helped. Is there a cabin filter that needs to be replaced or is something wrong with my ac? Someone please help me or I'll go crazy this summer.
