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 HEALTHY VAPE PENS MELO Labs, Inc. Vape Flavors and Vape Juice: What You Need to Know Johns Hopkins Medicine New wellness vapes, while advertised as completely safe and supplemental, are not as healthy as they may seem The Central Trend