Do Juul Pods Contain Formaldehyde Juul can continue selling e cigarettes as FDA says vaping benefits 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 Contain Formaldehyde Juul users inhaling chemicals not listed FDA orders Juul to stop selling e cigarette products