FDA reverses order taking Juul vaping products off the market in US, opens door to possible authorization ABC News 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. Plus Pods (JUUL) Premium Ejuice Juul Sales Recovered Within Weeks of Self imposed Flavor Ban Respiratory Therapy Juul Halts Online Sales of Some Flavored E Cigarettes WSJ