People are really out here thinking vaping isn't killing you : r confidentlyincorrect E liquide : une taxe de 0,15 par millilitre La Revue des Tabacs Vapes and e cigarettes often contain nicotine, heavy metals, and carcinogensand can harm developing brains, affect mood and learning, and lead to lasting lung damage. Just one hit can start an addiction. New study comes the closest yet to proving that e cigarettes aren't as dangerous as smoking