I've seen it suggested to eat something really salty. A few days ago my tastebuds were going a little numb, and I ate some salted sunflower seeds, dunno if it was related but they were perked up right after. I was also drinking water with lemon in it at the time.
I suspect all these suggestions are like hiccup "cures," but it never hurts to try.
I suspect all these suggestions are like hiccup "cures," but it never hurts to try.