What are electronic cigarettes (e cigarettes)? Simple and Practical Mental Health 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 E cigarettes lower immunity to flu and other germs Addressing the challenges of E cigarette safety profiling by assessment of pulmonary toxicological response in bronchial and alveolar mucosa models Scientific Reports