What is the cause of Hyposmia?

It may be due to an obstruction in the nose, such as a deviated septum, tissue swelling or, rarely, tumors of the nasal cavity. Nasal trauma can cause a loss of smell, either from a new blockage or from damage to the olfactory nerve. Many cases also occur after a viral infection and can be permanent.

Can you fix Hyposmia?

Hyposmia that is due to a seasonal allergy or a cold usually improves without treatment, but some medications and types of therapy to retrain the sense of smell may help.