Disposable vapes ban 'could lead to relapse in people trying to quit smoking' Vaping The Guardian 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 Metals found in disposable e cigarette vapor could pose health risks American Chemical Society What's in vapes? Toxins, heavy metals, maybe radioactive polonium