Perhaps with a really heavy smoker the smoke would repel the moths. The only time I've smoked in recent years has been as a way of keeping off the flies and so forth when camping or walking - and I've never felt the slightest urge to go back to smoking generally after this. The idea that you're necessarily always one fag away from dependency is no doubt true for some people, certainly not for me. (And I'm not suggesting that's this is a matter of willpower on my part and lack of willpower in theirs.)

I think people have a tendency to generalise too much from their own experience about things like that.