Vapes with Diacetyl List: Brands and Flavors to Avoid 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 Which E Juices Have Diacetyl? VanGo Vapes Diacetyl Free Vape Juice: Safe Brands Guide (2026) Cyclone Pods Gasping for Action A Watchdog Report Lab tests reveal popular e cigarette liquids contain harmful chemicals 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.