Vaping, Diacetyl, and Popcorn Lung: Is the Threat Real? Vaping360 We get asked about ingredients a lot. Reputable brands like Loon focus on modern standards and generally avoid Diacetyl, sticking to food safe flavorings. We only stock brands we trust. Janesville, Delavan, LOON AIR 6000 PUFF DISPOSABLE Heavy Heads MN 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 Ah yesvaping studies saying they contain diacetyl. : r Vaping