The ingredients in the liquid used for e-cigarettes are Propylene Glycol, Distilled Water, Nicotine, Flavorings, minute amounts of alcohol and occassionally Vegetable Glycerin.
All of the ingredients are FDA approved and used every day by every person alive. Propylene Glycol, Vegetable Glycerin, Alcohol, Distilled Water and Flavorings can be found in everything from Toothpaste to Cough Medicine.
Nicotine is found in Tomatoes, Potatoes, Eggplant and several other plants of the Nightshade family. Nicotine is comparable to Caffeine in it's effects on the body, it's a stimulant and vaso-constrictor.
Yes, nicotine is addictive, but then so is caffeine. "
Inhaled nicotine in cigarette smoke is over 98% absorbed, and so the exhaled mist of the e-cigarette is composed of propylene glycol, and probably contains almost no nicotine; and no CO.
Lacking any active ingredient or any gaseous products of combustion, the PG mist or ‘smoke’ is not harmful to bystanders.
The ‘smoke’ or mist is not tobacco smoke, and not from combustion – no flame is lit – and is not defined as environmental tobacco smoke.