Have you ever noticed that workers on tobacco plantations don't smoke? Even compulsive smokers after working for a while at a tobacco plantation stop smoking. This is because of the air at tobacco plantations. It contains nicotine alkaloid. Thus, person working at a tobacco plantations is consuming nicotine without smoking. Simultaneously, this individual is growing out of holding a cigarette.

This principle is widely used to break off the smoking habit. Moreover, this can be done so that the individual won't notice. In order to do this it's enough to grow tobacco plant in the place where this person spends most of his time (for example: home and work). When the plant becomes full grown it radiates so much nicotine alkaloid that fume from two bushes is enought to make cigarette traktion weaker. Within several weeks in a house with tabacco plants, smoker grows out of smoking habit. Afterwards, the plants can be removed.

One of the pluses of this method is: nothings is needed to be told to the smoker. No notification. It all can be done without of his/her knowlage.

Consumption of small nicotine doses through air beats of smoking desire. Same is just with alcohol. Kvass (dark sour Russian beer made from fermented rye or barley) contains small doses of alcohol. Drinking it doesn't hurm health and dismisses the urge to stronger drinks. It's enough to drink kvass on a regular basis so that the desire for drinking will disappear.

P.S.: I'm neither smoking nor drinking and haven't tried these methods on anyone. I've read this in some book and considered it interesting enough for publishing.