How common is loss of smell in COVID-19?

Some people notice smell loss with other respiratory symptoms, while others notice it prominently. Taste may seem reduced because smell and flavour are closely connected. The presence, absence or severity of smell change cannot determine COVID-19 on its own; similar symptoms can occur with other infections and nasal conditions. Recovery can be gradual, and distorted smells may occur while the system is recovering.

If COVID-19 is possible, follow current local advice about testing, staying away from vulnerable people and returning to usual activities. Rest and drink fluids, and avoid smoke or irritating fumes. Check food freshness by date and appearance rather than smell, and make sure smoke or gas alarms work. Ask a pharmacist or clinician before taking any treatment for congestion.

Contact a clinician if smell loss persists, worsens, or is accompanied by new neurological symptoms. Seek emergency help for severe breathing difficulty, chest pressure, new confusion, inability to stay awake, or pale, blue or grey skin or lips. Follow local urgent-care guidance if you are at higher risk of severe infection.

Ask whether testing is appropriate, how to reduce contact with others, and what symptoms should prompt review. If smell remains altered, ask about assessment and safe ways to support recovery, especially if eating, cooking or detecting hazards has become difficult.