Banned Dangerous Vape Ingredients to Avoid in Your Vape Juice Don't let the stylish designs and sweet flavors fool you; vaping can significantly increase your risk for serious respiratory and cardiovascular diseases, including: Chronic obstructive pulmonary disease Heart attacks and Unveiling the Ingredients of Vape Juice What's Inside Your Vape Juice Vape King Blog The FDA doesn't know if flavored vaping chemicals are safe to breathe Salon.com The Chemistry of Vaping ChemistryViews 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.