Processed Food Flavoring Additive 'Diacetyl' also in Vape Chemical Free Life Just How Harmful Is Vaping? More Evidence Is Emerging. The New York Times Discover Al Fakher Crown Bar Disposable Vapes Online Diacetyl Vape Is Diacetyl in Vape Juice 2021 ? 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