Yes, as the antibiotics start to work and the upper respiratory infection clears this should all go away. You sound as if you are very ill with your URI and possible sinus infection so this may take some time. Give yourself a few more days and I believe that you will start to feel better and this smell will most likely disappear and you will be back to normal. If you find that this isn't the case, make a trip into your doctor's office for further evaluation. I know that it seems like an eternity when you are ill, but the antibiotics will help this to go away. It just takes some time. I hope that you are feeling better soon.