Does anosmia go away?

A blocked nose can stop scent molecules reaching the smell receptors. Colds, allergic rhinitis and sinus inflammation may cause this type of reduction. Viral illness can also affect the smell system itself, so recovery may take longer after the other symptoms settle. Some people notice distorted smells or a gradual return rather than an immediate change. Loss of smell can also alter flavour perception and reduce awareness of smoke, gas or spoiled food.

Notice when the change began and whether congestion, facial pressure, fever or a recent viral illness came first. Treating nasal inflammation may help when a clinician identifies a blocked or irritated nose; do not put unprescribed substances inside the nose. Check food dates and use working smoke and gas alarms while smell is reduced. Arrange an appointment if the problem continues after the illness has cleared, keeps returning, or affects eating and daily safety.

Seek urgent medical care for sudden loss of smell with weakness, trouble speaking, confusion, a severe headache or other new neurological symptoms. Prompt assessment is also sensible after a head injury, or when loss of smell occurs with severe facial swelling, breathing difficulty or an unusually severe illness. A clinician can examine the nose, review medicines and decide whether further testing is needed.

Ask what cause is most likely, whether your nasal passages need examination, and how long recovery might take. Ask which treatments are suitable if allergy or sinus disease is suspected, and how to reduce safety risks while your sense of smell is absent.