Angleton ER - A bitter or bad taste in the mouth can be a usual reaction to eating pungent or sour foods. But if the taste endures for a long time or
What causes a metallic taste in mouth, and how can one get rid of this condition permanently? - Quora
![Association between bitter taste receptor phenotype and clinical outcomes among patients with COVID-19 - ERS - European Respiratory Society Association between bitter taste receptor phenotype and clinical outcomes among patients with COVID-19 - ERS - European Respiratory Society](https://www.ersnet.org/wp-content/uploads/2021/06/Smell-taste-bitter-sour-mouth-nose.png)