I think there is, and I've only come across it in a few scents, and all French ones at that. I'm sure scent houses from other nations can have the same thing, but for my own brain's faults for sure I've only smelled it in French ones. I'm talkin' Piquet's Bandit, Hermes Bel Ami, Molinard stuff from the Les Fleurs de Provence series. They all seem to be richer and project more the longer they're on my skin. A phenomenon that I just love. Several Diptyque scents do it as well, like L'Ombre dans l'Eau, Eau Lente, and maybe Oyedo and Ofresia, but I can't remember for sure which ones struck me as doing this.