It sounds like the infection you had in February somehow has affected the lining of your nose to the extent that it has affected your smell and taste. It is possible this is from a continuation of the inflammation caused by your infection. I would suggest having your physician look into your nose and see if it looks inflamed. If this is the case, it might be worthwhile to have a trial of inhaled nasal steroids for a short time to decrease this inflammation. If the physician does not see inflammation, you may need to see an ENT specialist to determine the cause of the change in the nerve for smelling that is located in your nose.