What To Do When You Have No Juul Pods Vaping and Electronic Cigarette (E Cigarette) Products Do Juul Pods Contain Formaldehyde As Vaping Devices Have Evolved, So Have Potential Hazards, Researchers Say Sunset Vape JUUL manufacturers aren't required to disclose their ingredients. Cartridges or pods may contain arsenic, formaldehyde, rubidium, benzaldehyde, cadmium and or lithium. Scientists are still working to understand more fully the health JUUL Pod Ingredients: What's in E Cigarettes? 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. What are the harmful ingredients in Juul pods?