They are found in tissue located high inside the nose, and connect directly to the brain. Gustatory nerve cells are stimulated by the taste of food and beverage. They are located in the taste buds of the mouth and throat. These sensory cells transmit messages to the brain through the nerves, where specific tastes and smells are identified. Another chemosensory process, called common chemical sense , also contributes to smell and taste.
Flavor defines the food that is eaten, and is recognized mainly through the sense of smell.
In other disorders of the chemosenses, odors, tastes, or flavors may be misread or distorted, causing a person to detect an unpleasant odor or taste from something that is normally pleasant to taste or smell.