[beebeepka]

Thanks to your link, I discovered this: https://en.m.wikipedia.org/wiki/Docking_theory_of_olfaction

Had no idea it's just a theory. I've lived many years "knowing" that we detect smells due to their shapes.

[Duller-Finite]

This paper is the first structure of any odorant receptor-ligand interaction. There's currently no equivalent structure for mammalian odorant receptors to validate the docking theory, but it's likely correct.