What is the JUUL? Dana Farber Cancer Institute 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 Do electronic cigarettes create thirdhand chemical residue? Thirdhand Smoke Resource Center Juul e cigarettes were banned in the U.S. What are the vaping rules in Canada? The Globe and Mail