Loss of smell (anosmia)
Your sense of smell serves more than one purpose. It not only allows you to enjoy a variety of aromas, but also warns you of potential dangers such as smoke or leaking gas.
Loss of smell can be partial (hyposmia) or complete (anosmia), and may be temporary or permanent, depending on the cause. Although loss of smell is rarely a symptom of a serious condition, even a partial loss of smell could cause you to lose interest in eating, which could possibly lead to weight loss, malnutrition or even depression.