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. Potential Juul ban will boost other vaping brands, retailers and customers say Iowa Capital Dispatch Not just water vapor: why e cigarettes are so dangerous PUBLIC HEALTH INSIDER Do Juul Pods Have Diacetyl The Promise of Vaping and the Rise of Juul F.D.A. Delays Decision on Juul's E Cigarettes but Orders Others Off the Market The New York Times E Cigarettes and Vaping PPAC Central