You need to actually induce gagging, to the point where your eyes water a little. I accept no responsibility if someone offers you a smoke and you vomit on them.
OK, gagging in exchange for quitting smoking sounds better than most deals Omega offers. Can I have some details about this? I.e., how long did it take, how much you were smoking before, how, where, and how often did you induce gagging, any other side effects. (For instance, does instant uncontrollable vomiting actually happen to you or was that just hyperbole?)
Thus spake Eliezer:
It seems that many here might have outlandish ideas for ways of improving our lives. For instance, a recent post advocated installing really bright lights as a way to boost alertness and productivity. We should not adopt such hacks into our dogma until we're pretty sure they work; however, one way of knowing whether a crazy idea works is to try implementing it, and you may have more ideas than you're planning to implement.
So: please post all such lifehack ideas! Even if you haven't tried them, even if they seem unlikely to work. Post them separately, unless some other way would be more appropriate. If you've tried some idea and it hasn't worked, it would be useful to post that too.