"Odorous" refers to something that has a noticeable smell, which can be either pleasant or unpleasant. This term is often used to describe substances, foods, or environments that emit a strong scent. For example, flowers like roses are considered odorous due to their sweet fragrance, while certain foods, such as cheese, can have a strong, pungent smell. In scientific contexts, the term "odorous" is related to the study of olfaction, the sense of smell. Odorous compounds can be detected by the olfactory receptors in the nose, which send signals to the brain, allowing us to identify and react to different smells. Understanding odorous substances is important in fields like food science and environmental studies.