Electronic cigarettes sound fantastic. Rather than fill your lungs with tar, they deliver a vapour of nicotine to satisfy your craving, without the nasty side effects. They are popularly perceived as the safe alternative to cigarettes, a harmless way to get a nicotine hit. No wonder 700,000 people were using e-cigarettes in the UK last year, with that figure set to rise to over a million by the end of 2013.
