What Does Vaping Do to Your Lungs? Johns Hopkins Medicine While vaping is not risk free, it is less harmful than tobacco Our World in Data 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 VAPES ARE FAR FROM HARMLESS. The Carnivore Bar Vaping: The Good, the Bad and the Popcorn Lung MPH Online