It's not just water vapour While not all vapes contain addictive nicotine all do contain other components that can be harmful to your body Vaping is a helpful alternative for those actively Despite what you may hear, the liquid in vapes (known as vape juice) is not only water and sweet flavours. Heating the liquid produces toxic chemicals like formaldehyde. Formaldehyde is a Can You Vape Water and Should You Put Water in Your Vape? 6 Reasons why your vape is leaking. (How to Fix and Prevent It)