this post was submitted on 20 Nov 2024
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Wording is funky. To clarify:
The rain smell is due to a compound called geosmin. The bacteria that produces it is Streptomyces.
When I taught microbiology lab, I would grow a petri dish of Streptomyces during one particular class and have the students smell it
You mean.... You can ... Bottle up petrichore ??? How come is there no wide range of perfume/candle/lotion and whatnot?
Can I make it at home, if so, how would I go about it with everyday items? Can streptomyces cause health issues?
I've never smelled the stuff but apparently the smell of rain is something people try to bottle.
https://www.atlasobscura.com/articles/smell-of-rain-kannauj-perfume-mitti-attar-india
That's the romanticized, traditional Indian cowshit mix trying to approximate it. (Not doing a disparaging stereotype here, that's just literally how the article says they make it.)
I'd be surprised if it actually contains the compound we're talking about.
i Kind of doubt it. in a video i saw if the process they were using hardfired bricks. i don't believe any organic compounds would survive the heat.
(dung might be a better term for what you were referring to. i seem to remember that because of the way they feed their cattle the dung has a very high fibre content which makes it a good source for building material. it's nowhere as gross as the diarrhea like consistency we get from cows in Europe)