ONE in five Brits have a condition that makes them angry at the sound of chewing or breathing. Scientists say misophonia is a real issue and affects 18 per cent of UK adults – around 10million of us. Millions of people suffer extreme emotional reactions to the sound of chewingGetty - Contributor It makes sufferers feel “trapped or helpless” when they are triggered by annoying noises. Bugbears include sniffling, lip-smacking, slurping, joint crac…