Young readers know when things smell beautiful or gross, and in this entry in the Five Sense series (5 titles), they’ll get an approachable introduction to how people smell and why it’s important. Readers will follow scent molecules as they float through the air and come into contact with the nasal cavity, and they’ll learn the role the brain plays in tallowing people to perceive and recognize scents. Illustrated diagrams show the path scent molecules take, and photographs of people using their sense of smell help to illustrate how this sense can warn of danger. Lists of print and internet resources include books about how animals use their own extraordinary sense of smell. A good introductory resource on the process of smelling and the benefits of this sense.