Study shows vapes emit more lead than 20 packs of cigarettes yes, *20.* New research has uncovered a disturbing truth about popular disposable vapes: they may be more toxic than Deconstructing contemporary disposable vapes: A material and elemental analysis ScienceDirect Vaping Harmless. Vape aerosol contains toxic chemicals like formaldehyde, arsenic, lead, chromium, and nickel. They damage lungs. They harm developing brains. They raise cancer risks. We Yorkshire Smokefree Disposable E Cigarettes More Toxic Than Traditional Cigarettes UC Davis Teen vaping linked with toxic lead exposure, study finds CNN