If the organism has hyposmia or loss of sense of smell it is necessary to be alert, it may be hidden some diseases, such as: nasal diseases, viral infections, head trauma, etc. The treatment of hyposmia also depends on these causes. 1. Nasal diseases: The correlation between hyposmia and nasal diseases is very big, for example, chronic sinusitis, nasal polyps patients often have hyposmia. You can take anti-inflammatory drugs to help the recovery of rhinitis and sinusitis. 2.Viral infection: If the body has a cold because of some bacteria and virus invasion, it will lead to congestion and swelling of the nasal mucosa, runny nose, blocking the nasal airway, which will lead to the body’s loss of sense of smell. First of all, you can take some cold medicine, if the cold is relieved, the sense of smell will slowly return to the former. 3, Head trauma: Generally, if the loss of smell is caused by head trauma, it usually occurs within a few hours to a few days after the injury, and it is usually related to the injury site. Usually, different treatment plans should be taken according to the cause and the doctor’s guidance. The treatment of hyposmia depends on the cause of the hyposmia.