When to worry about loss of smell with COVID-19

COVID-19 can affect smell-processing pathways, so smells may become faint, absent, or distorted. A cold, allergies, sinus inflammation, medicines, or another nasal problem can also alter smell, so the symptom alone cannot identify its cause. Record when it began and whether you notice congestion, fever, cough, fatigue, breathing changes, or altered taste. This information helps a clinician assess the pattern.

Rest, drink fluids, and avoid smoke and strong chemical fumes. Protect yourself from hazards by checking smoke and gas alarms and labelling food dates. Avoid sharing food or close indoor space while following local infection-control guidance. Do not use harsh substances as smell tests. If you have conditions or medicines that raise your risk from COVID-19, contact a clinician early to discuss assessment and available treatment.

Seek emergency help for difficulty breathing, persistent chest pain or pressure, new confusion, inability to stay awake, or blue or grey lips or skin. Arrange prompt medical advice if you cannot keep fluids down, feel faint, become markedly weaker, or your breathing changes. For smell loss alone, book a review if it persists after recovery, repeatedly returns, or is accompanied by neurological symptoms or a recent head injury.

Ask whether you need testing or monitoring, which warning signs matter for your health, and whether any treatment should start promptly. Tell the clinician when smell changed, whether taste changed too, your breathing status, medical conditions, medicines, and any recent exposure or injury.