COVID Sniffing Dogs Detect Cancer

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Every single disease and condition has a unique odor, says Claire. Dogs can be trained to reliably find this odor and tell us about it. They've done various forms of cancer so far: Blood cancer, prostate cancer,. Parkinson's Bacteria. Malaria. And now they're starting to test this ability on COVID. The research is looking really promising.

Believe it or not, scientists still don't know how the sense of smell works. But they're looking at how powerful it is - dogs can actually sniff out cancer and many other diseases - and they're trying to figure out how to reverse engineer it. In fact, one MIT scientist may have built a robot nose ... without completely understanding how his invention works.

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