Popcorn Lung: The Deadly Secret in Your Vape! Did you know that the sweet, tempting flavor in your e liquid could be hiding a chemical called Diacetyl? This chemical, which tastes Diacetyl & Popcorn Lung EDGE Vaping Do Geek Bars Have Diacetyl? EightVape Vaping lung illness: Harmful chemicals found in e cig flavoring juice Vape juice contains a long list of chemicals, many of which aren't even listed on the packaging. Testing has also shown that vapes labelled "nicotine free" can have high nicotine levels. Which brands contain diacetyl in their vape juices? Knowledge Kaiweili Digital Technology