An individual’s sense of smell can decrease as they get older, but these changes are not noticeable right away. It is important for people to protect their sense of smell because it plays an important role in alerting them to danger such as spoiled food, gas leaks, and smoke from a fire. Smell disorders can also be indicative of other health conditions. To protect the sense of smell, the National Institute of Health (NIH) Senior Health recommends the following:

1. Treat sinus and nasal conditions. Swollen sinuses and nasal passages may contribute to a decreased sense of smell.
2. Avoid head injuries, and seek treatment if you suffer such an injury. Head injuries can lessen an individual’s sense of smell.
3. Avoid exposure to toxic chemicals. Wear a respirator when using paints and insecticides.
4. Treat other conditions. Individuals with diabetes, thyroid abnormalities, or certain vitamin deficiencies may experience a loss of smell or taste.