Hiya
I think that some of the posts in this thread might answer your question.
As for administering “pheros” internally to unsuspecting targets. Well, I’m pretty sure it is a rhetorical question and that you are just kicking a few thoughts around because as a concept it fills me with alarm! 
Firstly, pheros are not designed or approved for internal use and it is possible they could cause physical harm.
Secondly, if someone surreptitiously injects pheros into chocolates to gain “favours” that puts them in the same line of country as those who deliberately get people drunk or “spike” food or drink in some way and could land them in legal hot water. It could cause an unpleasant reaction and make the consumer ill, I don’t know what is in the pheros but I would never dream of opening a bottle and drinking them unless that was what they were specifically designed and were fully tested and approved in line with Government guidelines for. In this case, for the effects you seem to be looking for, that would have to be extensive drug testing.
Admittedly, our wearing pheros has an effect. But it does not tinker with the free will of others or make them behave in a way they regret later. If someone is thinking of injecting pheros into food then it seems they are looking for a stronger effect than this. I personally would always question the ethics of deliberating and calculatingly administering chemicals to erode free will - even if that is alcohol - or even taking advantage of someone (male or female) who is drunk. To me that is not “game” it’s abuse.
May