We call it "Madeleine de Proust" in French. https://fr.wikipedia.org/wiki/Madeleine_de_Proust https://fr.wikipedia.org/wiki/Madeleine_de_Proust https://en.wik

We call it "Madeleine de Proust" in French. https://fr.wikipedia.org/wiki/Madeleine_de_Proust https://fr.wikipedia.org/wiki/Madeleine_de_Proust https://en.wikipedia.org/wiki/Involuntary_memory https://en.wikipedia.org/wiki/Involuntary_memory "Proust Effect" or something like that in English.