Chemicals in e cigarettes may put users at risk Some E Cigarette Flavors May Be More Harmful Than Others The Atlantic 10 Things to Know About Diacetyl in E Juice Did you know some flavored vapes contain diacetyl, a chemical linked to popcorn lunga rare, irreversible lung disease? It scars the small airways, making it hard to breathe. Symptoms can mimic How do I figure out if my vape juice contains diacetyl or not? : r Vaping