Disposable Vape Pens: What Are You Inhaling? Sciworthy E cigarettes May Be Affecting the Health of Teenagers That Don't Smoke Did inhaling marijuana oil or vaping make 5 Utahns seriously ill? Health officials are investigating. 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,