What if you have pheromone on and a freind close to you dosen’t? How come the girl chooses you over him even though she dosen’t know where the pheromone is comming from? This makes me sceptical.
If I understand you correctly…
If you and your competition are with the target female, how will she know you are the one with the ever so pleasant pheromone signiture?
If that is your question…She will know which one of you the pheromones are coming from when you get closer to her. She will notice the strenght of the signiture increase. She will also notice if you leave the group and return. When you leave she will notice a lack of that pheromones signiture, and upon your arival it will return.
It is not uncommon for a secondary hit to occur where another male will benifit with a girl becuase of your pheromones.
I hope that answers your question.
good enough THX