Obstructions
In addition to irritation and congestion, the nose can experience physical obstructions that impede the airflow. Certain individuals are born with congenital bone deformities that can affect their sense of smell. Moreover, they may be more susceptible to chronic sinusitis, which can lead to anosmia. Some people may develop growths, resembling teardrops or grapes, along their nasal passages or sinuses. These growths, known as nasal polyps, are usually painless, soft, and noncancerous. However, if they become too large, they can obstruct the airflow.
Damage to Brain or Nerves
When it comes to anosmia, there are certain conditions that pose a higher risk due to potential damage to the brain and nerves. Any type of trauma that affects the olfactory nerve or olfactory system in the brain can result in anosmia. In some cases, degenerative conditions like Parkinson’s disease and Alzheimer’s may present anosmia as an early symptom. Moreover, there are numerous other diseases and conditions that can lead to a loss of the sense of smell. Additionally, certain medications and nasal sprays have the potential to harm the pathways that facilitate the sense of smell.