NOVA Season 19 Episode 13 What Smells?

What Smells? is an episode from the 19th season of NOVA, a popular science television series produced by WGBH Boston that aims to provide an in-depth exploration of the latest scientific discoveries and technology.

In this episode, the focus is on the often-overlooked sense of smell. Humans may not rely on their sense of smell as heavily as some other animals, but it still plays a crucial role in our daily lives and influences our thoughts, emotions, and behaviors.

The episode begins with an introduction to the science of smell, exploring some of the fascinating research that has been conducted on the topic. Viewers are introduced to experts in the field such as neurobiologists and fragrance chemists, who explain the latest findings on how smell works and why it is so important.

Along the way, the episode examines some of the more unusual aspects of smell. For example, viewers learn about how smells can trigger powerful memories and emotions, often in ways that are difficult to explain. Scientists have even studied the effect of different odors on our dreams, and some have proposed using smells to help people sleep better or alleviate stress.

What Smells? also touches on some of the darker sides of smell. The episode includes a segment on how certain smells can be used as weapons, such as tear gas and other chemicals that are used by law enforcement and the military. Additionally, the episode explores the role of smell in some of the world's more unpleasant occupations, such as waste management and sanitation.

Throughout the episode, viewers are presented with a range of fascinating experiments and demonstrations that help to illustrate the science of smell. For example, scientists demonstrate how they use sophisticated chemical analysis to identify individual scents in complex mixtures. They also show how the human sense of smell can be tested and measured, using some unusual methods that are sure to surprise viewers.

Overall, What Smells? is a thought-provoking exploration of one of our most underappreciated senses. Whether you're interested in the science of smell, or simply looking to learn something new, this episode of NOVA is sure to provide insights and discoveries that will surprise and delight.