Do your research Carnivore12. Not all are fragrant. That happens to be a cattleya alliance there are "interesting" fragrant ones as well. I have a red Catt about to bloom that smells like black licorice. I have also bloomed some that smell like fish slime. And word to the wise. Never stick your nose to smell a bulbo echinolabium or a bulbo phal. Wow putrid. I still love the oddities though.
Thank goodness the pretty ones that are not odd do smell pleasant. And just because it is a big flower doesn't mean it will have big fragrance. My two best smelling flowers are in the small side. Den kingianum and den rigidum. Rigidum has been changed to something else but you can easily find the cross reference.