Lixy - the one quitter I know that has never had the urge (not asked the other now non-smokers I know) is my father. He had a major surgery in the early 80's. He was a pack-a-day guy until the surgery. Post-op he was wheeled on his gurnee/bed thingee from recovery to his private room. In transition we went past a smoking lounge and the smell that wafted out was enough to make him sick to his stomach on the spot. To this day he has not touched a cigarette and has said it was a huge unexpected benefit of the surgery. I'm thankful for the side effect as well. Can't explain it really as he wasn't even thinking about quitting at the time - likely complained that he wouldn't be able to smoke for "x" days while recovering from the surgery.

To this day, he will not frequent places that have a strong smell of cigarette smoke (think of your favorite bar that serves the most excellent burger ... that type of place). If he goes into an establishment and the smell is too strong he will leave, as it still has a lingering effect of making him sick to his stomach.

Who knows, mayhaps they did a hemi-lobotomy and just never told us