TO GO WITH AFP STORY by SANDRA LACUT - F

TO GO WITH AFP STORY by SANDRA LACUT - FILES - Picture taken on July 4, 2012 shows a student testing a fragrance melt in a aboratory at the Givaudan Perfumery School in Argenteuil, northern suburb of Paris. Since 1990, the retired perfumer Yves Tanguy has held the keys to the "Osmotheque" scent library, set up near the Chateau de Versailles west of Paris as a repository of fragrances past and present. Precious few people have access to the library's inner sanctum, where the rarest of its 2,500 fragrances are guarded under lock and key. AFP PHOTO ERIC FEFERBERG (Photo credit should read ERIC FEFERBERG/AFP/GettyImages)