I've tortured the Spouse Thingy for the past year over our car's air vents. It's been either run the car on Max A/C, or turn it off entirely, because the smell that leeched out was unbearable. Well, for me. It didn't seem to bother him. But I'm delicate that way.
He took the car in for the 30K service, and the car has a cabin air filter.
It smells much better now...You'd think we would have inquired about that a year ago, eh?