Our sense of smell sucks and especially the receptiveness to pheromones is pretty weak.
...
tl;dr
Despite these claims, no pheromonal substance has ever been demonstrated to directly influence human behavior in a peer reviewed study.
However, there was an interesting study at the University of Zurich where 'trust' was increased in people who sniffed the hormone Oxytocin.
Fans of the Shat's TV show "Boston Legal" may recall a few episodes where that lawyer with a social disability (not Tourette's, but something like that... Asperger's?) - who would make popping sounds and spin around, etc - landed a super hot girl, because he was using Oxytocin 'cologne', which is also being studied as treatment for social ailments.
After finding this out, the hottie went on to sue him for sexual assault, because she only became attracted to him due to the Oxytocin spray he wore which caused her to feel that he was especially trust worthy.
U of Zurich study related article
Scientists Discover Trust Potion | LiveScience
Boston Legal script : scene related to that Oxytocin lawsuit:
Boston Legal
The Mighty Rogues
Season 4, Episode 16
Broadcast: April 17, 2008
Jerry Espenson and Katie Lloyd are in their office.
Jerry is pacing frantically, his hands on his thighs.
Katie Lloyd: Jerry, what's wrong?
Jerry Espenson: I'm in trouble.
Katie Lloyd: What sort of trouble?
Jerry Espenson: I can't tell you.
Katie Lloyd: Why can't you tell me?
Jerry Espenson: You're a girl!
Katie Lloyd: It's man trouble? Did you get a woman pregnant? [Jerry groans]. Dear God!
Jerry Espenson: It isn't that!
Katie Lloyd: Stop whinging and just tell me.
Jerry Espenson: [He puts his briefcase down, braces himself and takes a deep breath.] Well, during the strike I fell in love.
Katie Lloyd: What strike?
Jerry Espenson: It doesn't matter, the point is I met somebody wonderful.
Katie Lloyd: Fab! And?
Jerry Espenson: And she's suing me for sexual assault.
Katie Lloyd: Sexual assault? [Jerry squeals.] Stop squealing! You sound like a stuck pig. What happened? Did you touch her without her consent?
Jerry Espenson: No! I would never… she's claiming I… she's saying I drugged her! [He walks over and leans his forehead against the wall.]
Katie Lloyd: Jerry? Did you?
Jerry Espenson: [He slowly turns his head.] Well, maybe a little.
Katie ponders this. Jerry bangs his head against the wall.
<<break>>
Jerry and Katie are in their office.
Katie Lloyd: Oxytocin?
Jerry Espenson: It's a hormone. Not a drug.
Katie Lloyd: What does it do?
Jerry Espenson: Well, essentially it causes people to trust you.
Katie Lloyd: There's a hormone that causes people to trust you?
Jerry Espenson: I mainly used it for me. It can also help people with social anxieties. It enabled me to trust her as well. I spray it on like a cologne. It has a nice gentle fragrance, not too bold. Anyway, Dana, that's her name, she found out and she's suing me. [Katie sighs]. You're disappointed in me.
Katie Lloyd: Well, I am, Jerry, truth be told.
Jerry nods.
http://www.boston-legal.org/script/BL04x16.pdf (pdf)