# Why? Files: Case Of The Unknown Stink

In this program, students are invited to actively join the tree house detectives as they investigate the Case of the Unknown Stink. The tree house detectives accept the challenge of trying to find the source of an unpleasant odor that is invading the surrounding neighborhoods. To determine the source of the stink, the detectives learn about the sense of smell: what it is, how people and animals smell, and how wind speed and direction influence the movement of odor. They also learn that the source of the unknown stink is right under their very noses. To license this film and get a higher quality version for broadcast/film purposes, contact A/V Geeks LLC .

- Kind: Film
- Year: 2000
- By: NASA; Langley Research Center
- Genres: Space, Industrial and advertising
- Archive: [Internet Archive](https://archive.org/details/case_of_the_unknown_stink)
- Licence or status: none stated by the archive
- Who can watch: Tweens profiles and older (the archive gives no rating; placed by Invisible Network from its collection and subjects)

[Watch now](https://invisiblenetwork.ai/watch/archive/ia/case_of_the_unknown_stink?play=1)