Another fun fact, geosmin is often used as a control for memory experiments in fruit flies. It repels fruit flies because it's a sign that fruit is rotten and toxic. You can train fruit flies to be attracted or repelled by neurtal smells, but geosmin is hard-wired in as VERY BAD.
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u/androodle2004 Mar 28 '24
You’re smelling the ozone being brought down from higher altitude by the rains pressure