All E Cigarettes Emit Harmful Chemicals, but Some Emit More Than Others Berkeley Lab Berkeley Lab News Center Vaping is often marketed as a safer alternative to smoking, but many vape products contain nicotine, harmful chemicals, and heavy metals that can harm developing brains and lungs. Some E Cigarette Flavors May Be More Harmful Than Others The Atlantic E cigarettes may be harmful to health an annotated graphic Engineering & Technology magazine The Harmful Health Effects of Vape Use Advanced DDS