How long for smell to return after a cold?

A cold can swell the lining of the nose and prevent scent molecules reaching the smell receptors. Congestion, thick mucus and altered taste can therefore improve together. If smell remains reduced after other cold symptoms settle, inflammation or another condition may be contributing. COVID-19 can also cause loss of smell, so consider testing and local guidance when that fits your symptoms or exposure.

Rest, drink fluids and manage nasal congestion with measures suitable for you. Avoid inserting objects into the nose and do not use decongestant sprays for longer than their instructions allow. Keep smoke and strong irritants away from the nose. Because reduced smell can hide smoke, gas or spoiled food, check alarms and ask someone else to assess questionable food.

Speak with a clinician if smell does not start improving after the cold, remains altered for several weeks, or returns with distorted or unpleasant smells. Seek prompt care for one-sided blockage with bleeding, severe facial pain, swelling around an eye, or a head injury. Report persistent loss alongside fatigue, low mood, difficulty concentrating, joint pain or loss of taste.

Ask whether your nasal symptoms suggest another cause, whether COVID-19 testing is useful, and which treatments are safe for you. Ask how to protect yourself from household hazards while smell is reduced and when follow-up is needed.