What it you could taste something that is not normally associated with taste - like a word or an emotion? Two authors, both with books out this summer, explored the same unusual premise.
In Bitter in the Mouth: A Novel, 30-something Linda has the ability to taste the words she hears. This is "lexical-gustatory synesthesia," which according to Wikipedia "is one of the rarer forms of synesthesia, in which spoken or written words evoke vivid sensations of taste, sometimes including temperature and texture (e.g., for lexical-gustatory synesthete JIW, 'jail' tastes of cold, hard bacon)."Despite its starred review from Publisher's Weekly, I think the book is going to have a hard time finding traction because of:
The Particular Sadness of Lemon Cake: A Novel. PW says, "Bender's narrator is young, needy Rose Edelstein, who can literally taste the emotions of whoever prepares her food, giving her unwanted insight into other people's secret emotional lives—including her mother's, whose lemon cake betrays a deep dissatisfaction."