Isabel Costello is a British writer and aromatherapist with a lifelong love of France. She has been nominated for numerous awards for her short fiction writing and in 2016 she released her first novel, ‘Paris Mon Amour’. In this week’s Monocle Reads, Isabel speaks to Georgina Godwin about her latest book ‘Scent’, set in Paris and Provence, which follows a perfumer’s conflicting desires and intimate relationships.