OR2M3 (Olfactory Receptor, Family 2, Subfamily M, Member 3): OR2M3 is a gene that belongs to the large olfactory receptor family, which is responsible for the sense of smell. These receptors detect volatile odor molecules and are highly diverse, enabling the perception of many different scents. OR2M3 is expressed in the olfactory epithelium of the nose and plays a key role in odor detection and signal transmission to the brain. Research on OR2M3 and related receptors helps deepen our understanding of smell and has potential applications in flavor science and sensory biology.