Wannerton has a rare form of synaesthesia known as lexical-gustatory synaesthesia, meaning that his taste and hearing senses do not operate independently of each other. As a result, for Wannerton every word and every sound has a distinctive flavour. Although the words and sounds do not usually bear any relation to what they taste like, the flavours are always consistent; “speak”, for example, has tasted like bacon for as long as Wannerton can remember.
https://www.youtube.com/watch?v=KugpOg4Iozc