Chemicals in e cigarettes mix together to form new, unexpectedly toxic compounds EurekAlert! 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 High Levels of Fruit flavored Chemicals in E cigarette Liquids Estimated mass of flavoring chemicals in e cigarettes (g e cigarette) Download Table