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 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 What's in vapes? Toxins, heavy metals, maybe radioactive polonium Researchers Find Toxic Metals in E Cigarette's Johns Hopkins Bloomberg School of Public Health Just How Harmful Is Vaping? More Evidence Is Emerging. The New York Times Disposable Vapes: Abertay academics lead push for global reform of single use electronics