The antonyms for the word "more odoriferous" would be fragrant, sweet-smelling, fresh, aromatic or pleasant-smelling. These antonyms serve as an antonym for the word more odoriferous as it pertains to a positive, pleasant, and desirable smell. People often associate good smells with cleanliness, freshness, and a sense of calm, while bad smells can be associated with filth, decay, and even danger. By using antonyms like fragrant or sweet-smelling, people can communicate the positive nature of different scents, highlighting pleasant and enjoyable aromas, as opposed to those that are off-putting or unpleasant. These antonyms serve as a reminder that not all smells are created equal, and that some are far more desirable than others.