I have had a cold for about 2 weeks which has led to sinus infection ( blocked nose, head pain) I like to avoid antibiotics ( always get thrush) so I have not gone to the doctors . The symptoms seem to naturally receding now but I have no sense of smell. Cant smell anything at all even a squirt of perfume right under my nose or small boys pants picked off the bedroom floor( this could be a blessing in a disguise !) will it come back or do I need to see a doctor