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by FavouriteColour 2786 days ago
Wikipedia says:

l-forms of amino acids tend to be tasteless, whereas d-forms tend to taste sweet.[7] Spearmint leaves contain the l-enantiomer of the chemical carvone or R-(−)-carvone and caraway seeds contain the d-enantiomer or S-(+)-carvone.[10] These smell different to most people because our olfactory receptors are chiral.

https://en.wikipedia.org/wiki/Chirality_(chemistry)#In_bioch...