Which brands contain diacetyl in their vape juice? Knowledge Kaiweili Digital Technology Does Diacetyl In Vaping Cause Popcorn Lung? SMOKO E Cigarettes Diacetyl: Is it a danger for the e liquid? Our expert advice! A&L Which E Juices Have Diacetyl? VanGo Vapes Vaping lung illness: Harmful chemicals found in e cig flavoring juice DYK? Vaping coats lungs with potentially harmful chemicals. This can include chemicals such as: Diacetyl: This food additive, used to deepen e cigarette flavors, is known to damage small passageways in the lungs.