I'm dying because there is some mid 1800s theory of smell that uses vibration and harmony, metaphorically, and I can't find it. But while searching, I came acr

I'm dying because there is some mid 1800s theory of smell that uses vibration and harmony, metaphorically, and I can't find it. But while searching, I came across this: https://www.bbc.com/news/science-environment-21150046 https://www.bbc.com/news/science-environment-21150046