The olfactory bulb is a structure located at the front of the brain, responsible for processing smells. It receives sensory information from the olfactory receptors in the nasal cavity, which detect odor molecules. This information is then transmitted to other brain areas for further processing and interpretation. In humans and many animals, the olfactory bulb plays a crucial role in the sense of smell, influencing behaviors such as feeding and mating. It is part of the olfactory system, which includes the olfactory tract and other related structures that help us identify and respond to different scents in our environment.