It might be hard for young people living in our enlightened times to believe, but, once upon a time, smoking was the height of cool. The favourite film and music stars, from Clark Gable in the 1930s, to Mick Jagger in the 1960s, were often photographed with a cigarette in their hands, whilst popular films had iconic scenes were cigarettes were actually integral to the plot. Just think of that famous, romantic scene in Now Voyager, with Paul Henreid and Bette Davis, the iconic Audrey Hepburn with her cigarette in a holder in ‘Breakfast at Tiffany’s’, or a dazzling Rita Hayworth, photographed in a slinky black dress and a swirling…