All about vapes what's in them, how do they work, and more Philip Morris International Is Vaping Good for You? Northwest Career College Vaping Information Substance Use Prevention Services Youth Services System, Inc. Youth Services System, Inc. What's in an E Cigarette? American Lung Association What is vaping? What are e cigarettes? Is it as harmless as it is made out to be? The truth is many e cigarettes contain nicotine, a highly addictive substance that can affect brain