Yeah, but is that all that it is? I'm fairly certain from personal experimenting in this general field that most of the chemical effects one can get in the mind are magnified a good deal by the person themself, and pretty much voluntarily- chemoreceptors are only good for one burst at a time, meaning an intense, involuntary burst of... whatever, might last a couple seconds. No more, and that's not long enough to influence thought significantly. After that, the brain can go on to other, longer-lasting but less potent chemicals, but there's a kinda psychological gap there. As others have demonstrated far more dramatically than I have the guts to do, if you go under severe pain conditions, it hurts like hell for a second and you start freaking out and spasming, but after that if you have the right psychological control over yourself you can ignore even that. (I, personally, can't even ignore irritating itches, but I can demonstrate this ability in other areas). So it's not a subconscious, involuntary thing- it's something that's controlled semiconsciously by the person, and how they deal with it unconsiously is determined by how they were taught to in life. I've seen women who, at certain times of the month, can only be approached at a distance of several hundred yards, and then on tiptoe. I've also seen some who don't seem to change at all- and these are 18-year-old-girls, so it's not menopause or anything. It's how much they make it worse for themselves. It's much the same when one has a diseasae, or has just cut themselves accidentially, or got a nasty electric shock- it's nothing that lasts, unless you determine it should. And I'm babbling. Ah well, fribagin' daytime work, ruining my nights...
[gets tired of all this sex/psychological talk]
[channels his sexual energies into the lucrative business of machete murder]
[creeps up behind, oh, let's say, icespeed, breathing heavily through hockey mask]