With cigarette giant Philip Morris committing to a "smoke-free future", e-cigarettes appear to be the new frontier in tobacco consumption. But is "vaping" nicotine actually healthier than smoking it? Probably, but that may not mean it’s good for you.

Cigarette smoking might be banned in almost every public space in Australia, but you’ve probably spied vapour trailing behind people inhaling e-cigarettes as they wander down the street or chill in cafes and bars.