Myth vs. Fact Myth: Vaping is just flavored water" Fact: Vape aerosol contains heavy metals, formaldehyde, and nicotineall inhaled directly into your lungs and can cause breathing problems, lung disease and cancer. All E Cigarettes Emit Harmful Chemicals, but Some Emit More Than Others Berkeley Lab Berkeley Lab News Center Carbonyl Compounds Generated from Electronic Cigarettes E Cigarettes Vaping with Juul & Other Electronic Cigarettes Are E Cigarettes a Healthy Way to Quit Smoking? WSJ