There Is No Justification for Disposable Vapes Period. Disposable E Cigarettes More Toxic Than Traditional Cigarettes UC Davis 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 Macroscopic Metals The Real Cost How does the disposable vape ban work, and how harmful is vaping? Researchers Find Toxic Metals in E Cigarette's Johns Hopkins Bloomberg School of Public Health