E Cigarettes and Vaping PPAC Central Vape aerosol isn't water. It contains nicotine, formaldehyde, ultrafine particles, and flavor chemicals linked to lung irritation. Know what you're inhaling. Vuse FAQs We Answer Your Vape Questions HERE! Vaping is the act of inhaling an aerosol (often mistakenly called vapor) produced by a battery operated device called an e cigarette or vape. These devices heat a liquid that usually contains nicotine, flavorings,