I don't think I'd wanna date someone based on their smell... There's just something kind of... Icky about smelling a stranger's clothes.
It's fine if your cuddled up in bed and smelling your boyfriends jumper because it reminds you of him, but this just seems a bit odd.
However, I definitely believe pheremones have a huge deal to do with who I'm attracted too.
That's one of the reasons why, even after everything I know about my ex (boy shagging), my body still reacts whenever he's around me. He still, to this day, turns me on... Which is sickening in my head, but I literally have no control over it. Some people just do that to you.
That's also why I'm starting to get feelings for a guy I've known for years, just because of one night during which I was very closely exposed to whatever pheremones he was emitting
But in a way, that's why I think if you want a happy and successful relationship, you shouldn't allow yourself to choose a mate based solely on your instincts/heart/pheremones (or whatever you want to call it).
Because unfortunately the people who you are most attracted to for THAT reason are often competely logically wrong for you, and will possibly have a negative impact on your life.
It's not just pheremones that are important as well. I think attraction is based on a combination of so many different things, and in reality, very very rarely on just the look of a person.
Body language, choice of words and tone of voice, social skills, the way they act around other people/kids/your friends etc - all massive contributors.
Not to mention taste specific turn ons like power and success, danger, muscular body, intelligence, artistic (musicians etc).