The antonyms for the word "more olfactory" include less fragrant, less aromatic, less scented, less redolent, less odorous, less perfume, less sweet-smelling, less nasal, and less aromatic. These antonyms represent a wide range of characteristics that are opposite to that of being more olfactory. They indicate an absence or a diminished presence of smells, fragrances, or scents. For instance, something less olfactory could be something that lacks any pleasant or unpleasant smell, something that doesn't evoke any memories or emotions, or something that is simply unnoticeable to the senses. Therefore, the antonyms for "more olfactory" are useful to express the absence or the reduced significance of smells or scents in different contexts.