A perfumer - here Jacques Cavallier Belletrud, the master perfumer for Louis Vuitton in his laboratory of the Fontaines Parfumées in Grasse - is both an artisan and an artist. For Félix Cola, who wrote the Book of the Perfumer published in 1931, he is a poet who expresses his verses in perfumes. The master perfumer indeed makes smells and scents rhyme like words in order to create harmonious perfumes expressing blends imagined from the seven olfactory families.