I am very sensitive to cigarette smoke. When I went to buy a car for my daughter back in January, I got a good deal on the car I wanted to get her. But when we test drove the car it was obvious the previous owner was a chain smoker - absolutely disgusting inside. I wrongly assumed the dealer could get rid of most of the smell, and bought the car. Their cleaning made very little difference. After we bought the car I cleaned everything in the interior, including the head liner. But when I turned on the vent fans the car smelled worse than ever.
So I decided to change the cabin air filter, which was a cheap part. I couldn't believe how disgusting the filter looked - coated with a black grime that smelled horrible. I venture to guess the inside of the previous owner's lungs looked the same. Once I changed that filter, the vent started bringing in cleaner air and the car smelled better. But even nine months later, when I get in her car, I can still smell some of the smoke. It doesn't seem to bother her, but I couldn't deal with it every day.
There is no cabin filter to replace in a TT, so I would pass on this one. Smoke gets in the fabrics and plastics, and it takes years to get out. It's hard to believe that people still smoke inside cars and RVs. But then again, I recently went to a concert in an indoor/outdoor theater. We had lawn seats, and it seemed like every other person around me was chain smoking. I couldn't believe people were even allowed to smoke in a public area like this. It really ruined the experience.