What are e-cigarettes and how do they work? An e-cigarette (sometimes referred to as a vapouriser or vape) is a device that allows you to inhale nicotine in a vapour rather than smoke. E-cigarettes don’t burn tobacco and don’t produce tar or carbon monoxide, two of the most damaging elements in tobacco smoke. E-cigarettes work by heating a solution (e-liquid) that typically contains nicotine, propylene glycol and/or vegetable glycerine, and flavourings. Using an e-cigarette is known as vaping. What types of e-cigarette are there? There are a variety of models available: Cigalikes: These look similar to tobacco cigarettes. They tend to have small batteries and can be disposable or rechargeable. Vape pens: These devices are shaped like a pen or small tube. They have a tank to store e-liquid and replaceable coils. The batteries tend to last longer than cigalike batteries. Mods: Mods come in a range of shapes and sizes but are generally the largest e-cigarette devices, with longe...