There is a documentary called 'Derek Tastes of Earwax' which is about synesthesia, where the main person in the documentary tastes words. He says during it tha

There is a documentary called 'Derek Tastes of Earwax' which is about synesthesia, where the main person in the documentary tastes words. He says during it that he finds it difficult to cook food and listen to people talk, because all the different signals become too much, and he needs to leave the room.