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The nose knows: Electric schnoz can smell when your food’s gone bad
(news.berkeley.edu)
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dart board;; science bs
rule #1: be kind
I can imagine people testing the hell out of it on blue cheese and rotting blue cheese and even more immature tests like when someone farts or something.
Video of the development process, presumably: https://youtu.be/OPeC7o9iDnI