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 Tobacco Tuesday Tip One Juul pod = 20 cigs. Some vapes = What are the harmful ingredients in Juul pods? Do Juul Pods Contain Formaldehyde FDA orders Juul e cigarettes off the market over safety concerns Do Juul Pods Contain Formaldehyde Juul users inhaling chemicals not listed Do Juul Pods Contain Formaldehyde FDA orders Juul e cigarettes off the market over safety concerns