smellABILITY smel n [U] the ability of the nose to discover the presence of a substance in the air 嗅觉 Smell is one of the five senses. 嗅觉是五感之一。 Dogs have a very good sense of smell. 狗有很好的嗅觉。 She lost her sense of smell after the accident. 事故之后，她失去了嗅觉。