Are E Cigarettes a Healthy Way to Quit Smoking? WSJ All E Cigarettes Emit Harmful Chemicals, but Some Emit More Than Others Berkeley Lab Berkeley Lab News Center Does Formaldehyde Make E Cigarettes Worse Than the Real Thing? 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 Vaping with Juul & Other Electronic Cigarettes Opinion The Formaldehyde in Your E Cigs The New York Times