Researchers Find Toxic Metals in E Cigarette's Johns Hopkins Bloomberg School of Public Health California recalls cannabis vape months after it was told of contamination Los Angeles Times 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 E Cigarettes, Vapes, and other Electronic Nicotine Delivery Systems (ENDS) FDA How Bad Is Vaping, Really? Tobacco Stops With Me E Cigarettes Vaping with Juul & Other Electronic Cigarettes