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. How do vapes work and what chemicals are inside them? BTN High E cigarettes can result in 'Popcorn Lung' Research shows blu vapour significantly reduces in vitro toxicity up to 99% fewer harmful chemicals Imperial Brands Science E cigarettes and Vaping Commercial Tobacco Use MN Dept. of Health