Although the exact method of transmission is not known, some research has suggested that the infection may spread between people through food and water
Slowly inhale and exhale (rather like the first drag of a fag) DRINK some water DO something else shopping, a walk, call a mate DIP into your alternatives whether it's a carrot, nicotine gum or a boiled sweet and, most of all, DELAY reaching for a cigarette
Since these are important to medicinal effect, they have to be added back in after the fact
Once you get used to smoking pure tobacco rather than what you get in commercial, factory-made, cigarettes, you won't go back
But, if you need to sterilize something in a pinch like a needle to get a nasty splinter out from under your skin applying a flame can help kill bacteria that could infect you otherwise