Vaping is on the rise. While e cigarettes don't contain tobacco, they may still contain many of the same toxic and cancer causing chemicals found in regular cigarettes. This includes: Acrolein (weed Flavoring Compound Chemical Class and Vaping Conditions Determine Toxic Carbonyl Emissions from E Cigarettes Chemical Research in Toxicology WES High Rate Discharge E Cigarettes Battery 15C Pulse & UL8139 Certified Full article: Electronic cigarette generated aldehydes: The contribution of e liquid components to their formation and the use of urinary aldehyde metabolites as biomarkers of exposure An updated overview of e cigarette impact on human health Respiratory Research Springer Nature Link