Chemicals found in e cigarettes could cause lung problems The Pharmaceutical Journal , The notion that vaping causes "popcorn lungs" due to diacetyl in e liquids is based on outdated information. , ., While diacetyl was once used as a flavoring agent in some e liquids and linked to EVALI and the Pulmonary Toxicity of Electronic Cigarettes: A Review Journal of General Internal Medicine Springer Nature Link Will vaping make you skinnier? Study shows e cigarettes may help dieters Not All E Cigarettes are the Same: What Parents Need to Know Bench Press