E Cigarettes and Vaping OHSU Nouvelles Cigarettes lectroniques, Systme De Chauffage Au Tabac IQOS Banque D'Images et Photos Libres De Droits. Image 92844778 Vaping has become common, but it's important to know what you're inhaling. Many e cigarettes contain nicotine, heavy metals like nickel and lead, and chemicals that can harm your lungs and overall health. Is vaping more harmful than smoking cigarettes? More people incorrectly think so: Newsroom UT Southwestern, Dallas, Texas Where E cigarettes are banned : r MapPorn Philip Morris's heating tobacco system IQOS