E Cig It's Just Water Vapor Right? Tobacco Prevention Toolkit Stanford Medicine Hyper Bar PX20000 Disposable Vape Vapor Authority DepEd Don't be fooled by the name. Vape isn't harmless water vapor, it's a marketing illusion. What e cigarettes actually release is aerosol packed with harmful substances: nicotine that hooks you, formaldehyde Can You Vape Water and Should You Put Water in Your Vape? This is what you're actually inhaling when you vape. (Hint: It's not water vapor.)