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Nicotine in e-liquid is typically delivered in the form of nicotine salts, which are smoother on the throat compared to freebase nicotine

Coumarin Coumarin is a recognized fragrance allergen and has documented hepatotoxicity concerns, including liver toxicity in animal studies and liver injury in susceptible humans (Abraham et al., 2010)

Research into short- and long-term effects is ongoing

Ventilation dramatically enhances smoke removalopening windows during and after smoking flushes contaminated air outdoors

That group also smoked fewer cigarettes and reported lower levels of nicotine addiction by the end of the randomized phase of the trial