Is e cigarette use in adolescents associated with continued smoking years later? Do e cigarettes kill you? Researchers don't know. Vox What to Know About Electronic Cigarettes (E Cigarettes) E cigarettes, heated tobacco and smokeless tobacco products European Lung Foundation All E Cigarettes Emit Harmful Chemicals, but Some Emit More Than Others Berkeley Lab Berkeley Lab News Center E Cigarettes Vaping with Juul & Other Electronic Cigarettes