FDA hazy on e cigarettes' safety CNN.com Vaping is less harmful than smoking, but it's still not safe. E cigarettes heat nicotine (extracted from tobacco), flavorings and other chemicals to create an aerosol that you inhale. Regular tobacco cigarettes contain Vape Juice Brands to Avoid (Harmful Ingredients) Vape Superstore Liquid nicotine used in e cigarettes still a danger to children despite recent decline in exposures