I took an environmental toxicology class and learned benzene has no perceptible smell to us at levels dangerous enough to be cancerous to our bodies, but when we pump gas and smell it, it’s like 5-10x the cancer-causing concentration.https://twitter.com/Pinboard/status/1417478792428232705 …
Replying to @mathowie
It's a pretty good rule of thumb for all organic chemicals that our noses aren't ridiculously sensitive to (like mercaptans). If you can smell it, no bueno.
8:55 AM - 20 Jul 2021
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