Question: I don’t know why but I seem to be losing my sense of smell. Could it be because of the nasal flu vaccine I got this year?

Dr. Hibberd's answer:

Nasal flu vaccine will not cause long-term anosmia (loss of smell). You should see a doctor for an evaluation.

Loss of smell is often due to a sinus infection or disease, but it can also be due to cranial nerve loss due to a lesion, tumor, or complex infection.

Sometimes loss of smell can indicate an increased risk for dementia. So your best bet is to talk to your doctor.