Can perfumes fundamentally change your character? I don't think so, but Grazia recently featured scents to make you smarter/nicer/slimmer. Here is what they suggested.
To make you smarter, try Manoumalia by Les Nez Parfums d'AuteursFire From Heaven by CB I Hate PerfumeIntelligence & Fantasy by The Beautiful Mind Series, Vol 1Invigorating by Boadicea The Victorious
To make you nicer, tryLemon Sorbet by EtroCologne pour le Matin by Maison Francis Kurkdjian Eau Fraiche by Les Creations de Monsieur DiorOrange Celebration of Happiness by Boss
To make you slimmer, tryRed Roses by Jo MaloneLumiere Noire Pour Femme by Maison Francis KurkdjianUn Petit Rien by Miller Harris
Alternatively check out my list of grapefruit fragrances to help with weight loss. These summer scent suggestions will bring a smile to your face every time you wear them. If you want to look smart, then Christiane Stenger, the Grand Master of Memory was the muse for the Beautiful Mind Series. And if you want to be sexy, then Clinique's Aromatics Elixir or Houbigant's Quelques Fleurs L'Original are unmissable.