Treat the underlying cause
See a doctor if symptoms are sudden, severe, or persistent
Get tested for COVID-19 if relevant
Stop smoking and avoid secondhand smoke
Reduce exposure to strong odors, chemicals, and pollutants
Keep the nose moist with saline spray or rinse
Use a humidifier if air is dry
Stay well hydrated
Manage allergies with appropriate treatment
Treat sinus infections or nasal congestion
Review medications with a doctor
Practice smell training daily
Maintain good oral hygiene
Address vitamin or nutrient deficiencies if present
Control chronic conditions such as diabetes or thyroid disease
Seek specialist evaluation if loss lasts more than a few weeks
Get urgent care for head injury, neurologic symptoms, or one-sided loss