E cigarettes can produce more formaldehyde than regular cigarettes, study says Los Angeles Times 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 Japan to investigate e cigarette safety after formaldehyde findings Vaping The Guardian Formaldehyde in Electronic Cigarette Liquid (Aerosolized Liquid)