23,000+ miles and still smells new...or at least a clean air smell. I use an electronic ionizer that I've had prior to this car. So it's been in this car since day one. I have occasionally smoked in it after some late nights, but probably only 3-4 times max with the window open. I've since quit smoking at the beginning of the year.
Bell Automotive 89107-E IONIZER-12 Volt