Don't be foolede cigs or vapes may be less harmful than cigarettes, but less harmful doesn't mean safe. Vapes can contain harmful substances including nicotine, heavy metals like lead, volatile organic compounds and F.D.A. Opens Door to More Flavored E Cigarettes The New York Times Guide : choisir son taux de nicotine pour e liquide A&L E cigarettes need tight regulation, WHO says, citing health concerns South China Morning Post