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 Vapes are clouded in misconception . They contain many of the same toxic and cancer causing chemicals found in regular cigarettes. One of these ingredients is diacetyl, used in popcorn flavourings for its Diacetyl in Electronic Cigarettes: What you need to know! E Cigarette Direct Flavors that contain diacetyl according to OSHA (OSHA, 2010). Download Table