Olfactics refer to the sense of smell or the study of smells. There are several synonyms that can be used to describe this sense, including olfaction, smelling, sniffing, scenting, nose, whiff, aroma, and fragrance. These words can be used interchangeably depending on the context and the specific meaning to be conveyed. For example, while the word olfaction generally refers to the sense of smell, aroma and fragrance might be used to describe a pleasant smell or scent. Similarly, smelling and sniffing may refer to the action of taking in a smell, while nose and whiff may refer to the actual smell itself. Overall, these synonyms offer flexibility and variety in language when discussing the sense of smell.