Making Sense: No one nose

Dogs can smell cancer, Covid-19, and many other health problems in
humans. Now, scientists are trying to duplicate these powers in
robotic sniffers. But there’s a big challenge here: Scientists
don’t really understand how smell works. This is the third episode
of our six-part series, Making Sense, and it originally ran on
March 10, 2021. For more, go to http://vox.com/unexplainable It’s a
great place to view show transcripts and read more about the topics
on our show. Also, email us! unexplainable@vox.com We read every
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