Potential Juul ban will boost other vaping brands, retailers and customers say Iowa Capital Dispatch JUUL electronic cigarette products linked to cellular damage UCR News UC Riverside F.D.A. Delays Decision on Juul's E Cigarettes but Orders Others Off the Market The New York Times 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. Do Juul Pods Have Diacetyl The Dangers of Juuling Not just water vapor: why e cigarettes are so dangerous PUBLIC HEALTH INSIDER