If you use cannabis, do it safely Harvard Health 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 Long Vape Smoke Remains in the Air Vaping vs Smoking Weed: Which is Better? NuggMD Vaping isn't just harmless clouds Most vapes = NICOTINE Impacts your brain (especially under 25) Addictive as before you even realise Messes with your lungs &