disease that causes loss of taste
True taste loss, however, is rare. Most often, people are experiencing a loss of smell instead of a loss of taste. In other disorders of the chemical senses, an odor, a taste, or a flavor may be distorted. Dysgeusia [dis-GYOO-zee-a] is a condition in which a foul, salty, rancid, or metallic taste sensation persists in the mouth.