Juul Vape Settlement Does JUUL Cause Lung Cancer? JUUL 5% Prefilled Pods 6 PK POD ONLY Diacetyl In Juul Pods Juul Pods 6pk Case 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. E cigarette flavored pods induce inflammation, epithelial barrier dysfunction, and DNA damage in lung epithelial cells and monocytes Scientific Reports The Promise of Vaping and the Rise of Juul The New Yorker