Dear friend, welcome and thanks for entrusting your query here at Healthcaremagic! I am Dr. Prasad Akole (Critical Care Expert- http://bit.ly/Dr-Prasad-Akole) and am glad to address to your query here. Lack of smell (anosmia or dysosmia) is sometimes the presenting symptom of a sellar brain tumour. Hence a MRI must have been planned. You can get it done after seeing your ENT expert. He/ she can look into the local factors if any. Do you have any eye problems/ visual disturbances? It is not usual to have altered taste or smell after penicillin or steroid treatment short term. Return of function can only be commented on evaluation. I hope to have answered your query satisfactorily. I would be glad to answer any further queries. Take care and please keep me informed of your progress at http://bit.ly/Dr-Prasad-Akole Good Luck! It helps us to improve continuously if you could please write a rating review before you ‘accept’ and ‘close’ the query. Thank you!!