E cigarettes no better than regular ones. Study finds they can harm your liver Health About E Cigarettes (Vapes) Smoking and Tobacco Use CDC Cigarette lectronique et diabte : peut on vapoter sans risque ? New workplace issue: If there's no smoke, is it smoking? The combination of propylene glycol and vegetable glycerin e cigarette aerosols induces airway inflammation and mucus hyperconcentration Scientific Reports