Do Juul Pods Have Diacetyl FDA warns Juul, says it marketed vapes as less harmful than Total flavor chemical and nicotine concentrations in JUUL pod fluids Download Scientific Diagram How Big Tobacco is Hooking Gen Z Respiratory Health Association 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 Cigarettes and Vaping PPAC Central 7,000 Reasons FHCtoday.com