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"However, it is an absolute myth that menthol cigarettes are better for you."

As Russell noted 30 years ago, "There is little doubt that if it were not for the nicotinepeople would be little more inclined to smoke than they are to blow bubbles or light sparklers" [13], "The rapid absorption of nicotine from snuff confirms its potential as an acceptable and relatively harmless substitute for smoking"

The pain vanishes

Sometimes yes sometimes no

Fire experiments have been performed in space, though this is obviously a little more controlled than lighting up a cigarette, and free of most of the contaminants that cigarette smoke produces