Hi,
Noted your history of altered sensation in nose after visiting a patient with 
pneumonia and in spite of taking all precautions.
I can understand your concerns.
First of all, I would advise you to use some decongestant nasal drops and take steam inhalations.
If this does not help then consult your Doctor for proper clinical examination and give additional prescription based medicines.
If required then consult an ENT Surgeon for nasal 
endoscopy, tests for throat swab, blood tests and 
CT scan of para-nasal 
sinuses to get a better diagnosis so that a proper management can be done.
Stop worrying as stress and 
anxiety add to the problems and then may need an additional treatment.
Hope I have answered your query. Let me know if I can assist you further.
Regards,
Dr. T. Chandrakant, ENT and General Surgeon