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Home > BrainStuff > How do scratch-and-sniff stickers work?
Podcast: BrainStuff
Episode:

How do scratch-and-sniff stickers work?
Category: Science & Medicine
Duration: 00:01:57
Publish Date: 2014-11-21 14:00:00
Description:

Scratch-and-sniff stickers are novelties that delight both children and adults. Sniff out the ingenious technology that makes them work in this podcast from HowStuffWorks.com.

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