What's in Vapes? BreakDown UNDERSTANDING E LIQUID INGREDIENTS AND FLAVOURS NYX Vape Canada Vaping releases toxic chemicals, including heavy metals, as well as ultrafine particles that go deep into the lungs. These increase the risk of heart and lung disorders. The FDA doesn't know if flavored vaping chemicals are safe to breathe Salon.com Nicotine Vapes: the Chemicals They Contain, What They Can Do to You Business Insider 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.