Vapes Tobacco Stops With Me E cigarettes: Facts, stats and regulations Vaping exposes users to toxic metals like lead and uranium, study says 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 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 Frequent teen vaping might boost risk of toxic lead and uranium exposure BMJ Group