I’m curious about how people can detect where the pheromone trail is coming from. For example, how does a girl realize that you are the one wearing the pheromone and not the guy next to her?
These as well as many many common questions can easily be answered by searching. It will take a few dozen hours of just reading every post to get up to speed but you will be much better off for when you decide to TUTH 
Here are a few threads on this topic:
hint: For questions like this one, just browse through the thread titles. I just went 8 pages back (which was only 2 weeks back!) looking at titles to find these; it took me less than 2 minutes.
its been talked about in the past quite a bit.
first, just like if you smell a beautiful scent comming off of a pretty girl, you can pretty much determine who’s giving it off,especially if the incentive is rewarding (getting closer to her for instance).
Now, one thing that we have also talked about in the past was incongruencies in what we see visually (the way one behaves for instance) and the pheromone signiture someone gives off.
lets say your wearing something that screams “dangerous alpha male comming through”…and you are not initiating conversation or doing the little things that seem to go along with that exaggerated title…the girl may think the signiture is comming from the one who IS behaving that way, get it?
if you do any back-reading and research a bit you will be pleasantly surprised by the posts/threads you find.
Sigma can help here. Also, good Q for catlord17 to comment on, if you can locate him!
The way I see it…people are able to localize nasal stimuli down to a central source. Consciously we can usually pick up a scent, and figure out where it came from…what the source is. Think Tucan Sam: “Follow your nose!” ok corny example. But think of an instance where you picked up a noticable foul stench…it might have taken awhile, but you can usually pinpoint it down to a central source.
I’m thinking that just as people are able to consciosly single out fragrance down to a single source, they are able to unconsciously single out pheromone signals to a single, more highly concentrated source.
The closer you are vicinity-wise to someone, the more easily they’ll be able to attribute the pheromones to you…Pheromone signals seem to have a more profound effect when you’re directly interacting with someone. Also like Lor says, a lot of how pheromones are perceived, if at all, depend on how you present yourself. If you openly present yourself in a manner that is highly congruent to the pheromone signal you’re putting out, people will more quickly and prominently attribute the effects to you.
Now if someone else is standing directly in your vicinity, then I suppose it would be possible for someone to residually profit from your mones. I can distinctly recall this happening about two weeks ago, when I met up a bunch of females with one of my male friends. The mix I wore that night was rockin, I must say. At one point, one of the girls there was very blatantly all over me, that one of my ‘targets’ that night eventually pulled her away and dragged her into the bathroom. So yeah I felt good about this mix at that point. Eventually I found myself in a situation where my friend was sitting next to me, while we were sitting down getting acquainted with all the women there. I must say the ladies there were downright swooning over him. He’s a good looking guy, and I’m sure they would have been attracted to him either way, but they were much more open and aggressive about it.
You might also read up on the article presented here: Mechanisms of scent-tracking in humans…
Chris
thanks for all the info guys and sorry about making a thread that was already answered. I had no idea that others have already posed this question