Vaping, Environmental Toxicants Exposure, and Lung Cancer Risk Teen Health Info : Vaping everything you need to know Do you really know what's in your vape? There's no safe vape. Besides nicotine, vapes contain many other harmful substances. Formaldehyde, arsenic and lead have all been found inside common vapes. It's Not Just Cigarettes: Vape Residue Sticks on Surfaces Too Thirdhand Smoke Resource Center About E Cigarettes (Vapes) Smoking and Tobacco Use CDC