For Barnabé Fillion, Fragrance Is a Multisensory Affair

Despite nearly drowning in a pool when he was 3 or 4, the perfumer Barnabé Fillion tries to take a swim in Paris, where he’s based for part of each year, whenever he feels a headache coming on. “Water, for me, is a way to transform,” says Fillion, 41, who has synesthesia, a condition in which one’s …