The FDA doesn't know if flavored vaping chemicals are safe to breathe Salon.com You've seen the device. But do you know what's actually inside it? Every disposable vape has 4 components and each one comes with real risks: Nicotine e liquid: toxic chemicals, including lead Vape Juice Ingredients: What are in Vape Juices Vabeen Nicotine Vapes: the Chemicals They Contain, What They Can Do to You Business Insider What's in Vapes? BreakDown Nicotine, propylene glycol, sweet flavorings, and various toxic chemicals like carcinogens and heavy metals are found in vape juice, posing health risks, especially to youth.