Sorry to always be harping on this; but this is MY reality and it never goes away.
Oral phantoms (a sub-category of burning tongue syndrome):
https://www.popsci.com/oral-phantom-taste-burning-hallucination/#:~:text=These%20hallucinations%2C%20or%20phantoms%2C%20are,feelings%20is%20still%20a%20mystery.