This book about the science of smells starts with the basics, from the reason why things stink to how our sense of smell works. Then come the specifics such as the link between scents and memory, descriptions of some of the worst smells on Earth, and information about the chemicals smells are made of. Young readers finally learn why feet and cheese can smell the same! An educational, hilarious compendium of the best-of in the gross-out science - with a glossary and index at the end.