Scripps Health E cigarettes remain the most commonly used tobacco product among middle and high school students in the United States, according to the Instagram The Chemistry of Vaping ChemistryViews Vaping isn't just vapor. It's an aerosol filled with nicotine and chemicals that go deep into your lungs and straight into your bloodstream. Many vapes contain: Highly addictive nicotine High concentrations of flavor chemicals are present in electronic cigarette refill fluids Scientific Reports Vaping vs. smoking: what are the risks? Pacific Life Re