Our expert says:
This is called anosmia and often is caused by damage of the smelling organ in the floor of the nose due to trauma or infection and is a common side effect of sinus surgery due to the congestion. In most cases the sense of smell do return gradually. You can try to give him zinc and Vit A supplements and if this persists I think you should inform his ENT surgeon.
The information provided does not constitute a diagnosis of your condition. You should consult a medical practitioner or other appropriate health care professional for a physical exmanication, diagnosis and formal
advice. Health24 and the expert accept no responsibility or liability for any damage or personal harm you may suffer resulting from making use of this content.