acatamathesia
n. C2 Proficiency acata·math·e·sia
n. the inability to recognize or name a smell. It is the opposite of being able to smell things clearly.
n. the inability to identify or name a specific smell. Often used in clinical contexts to describe a sensory deficit.
The patient suffered from acatamathesia after the accident.
Researchers are studying acatamathesia to understand how the brain processes olfactory information without being able to name the scent.
While the subject could detect the presence of various chemicals, he exhibited acatamathesia, failing to identify the specific substance responsible for the odor.