The Impact of Device Settings, Use Patterns, and Flavorings on Carbonyl Emissions from Electronic Cigarettes Common e cigarette chemical flavorings may impair lung function Harvard T.H. Chan School of Public Health E Cigarettes Vaping with Juul & Other Electronic Cigarettes Chemical Composition of Aerosols from the E Cigarette Vaping of Natural and Synthetic Cannabinoids Chemical Research in Toxicology Public Health Consequences of E Cigarettes