Recently I noticed my food wasn't tasting the same. I can smell things under my nose but when I eat, I can't smell what I'm eating. I was diagnosed with a bacterial sinus infection. I took two courses of antibiotics and my doctor says the infection is gone. However, I stil can't smell what I'm eating. I can breath through my nose OO but it's still is a little stuffy. Why can't I smell what I'm eating? It's very frustrating. I have been diagnosed with a B12 deficiency and I took shots for that in May. Will this improve?