It is unlikely for sinusitis to cause complete loss of sense of smell. Sometimes nasal polyps can cause loss of sense of smell and they can be managed sometimes by medications and sometimes by surgery. You can try a course of steroids. If it does not work then surgery may be the only hope
Next Steps
Consult nearby ENT specialist for confirmation of diagnosis and appropriate treatment if required
Answered2018-03-20 00:04:41
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