When Will Juul Flavors Come Back Juul to Stop Selling Flavored E Cigarette Pods in Stores 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. Juul Flavor Pods Ban FDA reverses ban on Juul vape products, which remain on shelves Juul Labs launches new Juul2 pod flavours Better Retailing