Irritating Compounds Can Show Up In 'Vape Juice' TPR There are no safe tobacco products, and yes, that includes vapes. The sleek, battery powered devices heat up liquid packed with nicotine and other harmful chemicals that turn into an aerosol you inhale Vaping lung illness: Harmful chemicals found in e cig flavoring juice Vaping lung illness: Harmful chemicals found in e cig flavoring juice Here's how Juul and other vape products affect your body Vaping is especially harmful to individuals under the age of 25, as their brains are not yet fully developed. The chemicals found in vapes can cause problems with memory and retaining information,