Vapes don't produce harmless water vapor. They can contain addictive nicotine, cancer causing chemicals like acetaldehyde and formaldehyde, and heavy metals that don't belong in your body. Live Vape Free is a text E cigarettes can emit formaldehyde at high levels under conditions that have been reported to be non averse to users Scientific Reports Daily exposure to formaldehyde and acetaldehyde and potential health risk associated with use of high and low nicotine e liquid concentrations Scientific Reports E Cigarettes: Know the Health Risks Department of Health