Effluvious is an adjective used to describe something emitting strong or unpleasant odors. Therefore, antonyms to this word would describe something lacking odors or having a pleasant scent. The antonyms could include fragrant, fresh, odorless, aromatic, sweet-scented, or clean. For example, walking into a home filled with fragrant flowers would be the opposite of walking into a room with an effluvious garbage bin. Similarly, a fresh breeze blowing from the sea would be the opposite of the effluvious fumes from a factory. These antonyms provide a different perspective of the environment, emphasizing the importance of pleasant and odor-free surroundings.