If have an odor coming out of your car's air vents, which some compare to the smell of gym socks or worse, cat urine, you might think there's nothing that could be done about it other than ignoring it or masking it with an air freshener. Or maybe you've looked into going to the dealership to have an air conditioning cleaning service done but found the cost way more than you had expected. The good news is that you can get rid of the smell without masking it with air fresheners and you may …