The disorders of smell are classified as "-osmias" and those of taste as "-geusias."

Anosmia - Inability to detect odors Hyposmia - Decreased ability to detect odors Dysosmia - Distorted identification of smello Parosmia - Altered perception of smell in the presence of an odor, usually unpleasanto Phantosmia – Perception of smell without an odor presento Agnosia - Inability to classify or contrast odors, although able to detect odors

Ageusia - Inability to taste Hypogeusia - Decreased ability to taste Dysgeusia – Distorted ability to taste