What can cause an altered sense of smell?
Take your pick… Here are some other causes of altered smell: * Some medications; In general, medications cause a metallic taste rather than a metallic smell. The antibiotic metronidazole (Flagyl) is probably the most common cause of a metallic taste in the mouth and potentially a metal smell. * Exposure to certain chemicals * Pregnancy * A cold or sinus infection * Bad breath * A history of head trauma * Side effect of anesthesia * Migraine People with depression, anxiety, or other psychologic disturbances can have an altered sense of smell.
