When to worry about loss of smell with a common cold

During a cold, mucus and inflammation narrow the upper nasal passages. This can temporarily reduce smell rather than damage the sense itself. Notice whether both sides of the nose are blocked, whether you can detect strong safe smells, and whether the change is improving as nasal symptoms ease. Other causes, including sinus inflammation, nasal growths, medication effects, or a recent injury, may need assessment if the pattern does not fit a simple cold.

Rest, drink fluids, and avoid smoking or irritating fumes. Saline nasal spray or a gentle saline rinse may ease congestion; use sterile, distilled, or previously boiled and cooled water for a rinse. Do not repeatedly sniff harsh substances to test your smell. Check smoke and gas alarms, and take care with hot food, spoiled food, and household chemicals because reduced smell can remove warning signals.

Contact a clinician if the loss persists after other cold symptoms improve, returns repeatedly, or affects eating and daily safety. Seek urgent help for loss of smell after a head injury, or with severe headache, confusion, fainting, new weakness, facial drooping, or trouble breathing. A clinician may examine the nose, review medicines, and decide whether testing or an ear, nose, and throat referral is appropriate.

Ask what may be causing the change, how long recovery should take, whether your medicines could contribute, and which nasal treatments are suitable for you. Mention smoking, allergies, sinus problems, recent injuries, and any change in taste or breathing.