Is There A Link Between E Cigarette Use And 'Popcorn Lung'? 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 Which brands contain diacetyl in their vape juices? Knowledge Kaiweili Digital Technology 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