Yep, I have disliked several frags at first sniff, then have grown to love them more than any in my wardrobe. Rive Gauche, Dior Homme, Himalaya, Ralph Lauren Purple Label, Messe di Minuit, and Anteaus are a few examples.
If I like something at first sniff, I usually grow tired of it.
If I LOVE at first sniff then, they are usually mine forever. Pomegranate Noir, Cuiron, Terre d'Hermes, Heritage, Creed OV, and Fou d'Absinthe are a few examples.
Music? Yep, Hated Ryan Adams and Whiskeytown, Coldplay, Josh Rouse, and Damien Rice, but now they are some of my favorite artists.