Would wearing a pheromone intended to be worn by men cancel out or respond differently if you were a women wearing a pheromone intended to be worn by women as well?
Would male pheromones even work on a woman? 
They don’t cancel out, but they will combine to do something, er… odd. I’m not quite sure what, there’s a lot of combos you could try that would involve male/female pheros. It is worth stating as well that many male and female pheromones and hormones are present in the body of the other sex, just to a much smaller degree.
There are some folk iwho have worn products designed for the other sex: both men and women. Indeed, some of the cross-gender phero applications are quite popular: some men wear copulins, which are women’s pheromones, or fatty acids secreted in the vagina at any rate (well, Androtics makes 'em synthetically 
). The rationale is: it will make the guy smell like he is “in demand” as he has just had a woman all over him. This is actively debated and experimented with as an idea on the men’s forum, and Instant Jerk is a man’s product with copulins. And then Tisha has reported that she likes to dab the tiniest bit of the men’s product TUTH under her nose, for the effect it has on her. But that is not quite “wearing” in the sense of intending to affect other people I suppose. I’m sure I’ve seen one thread around where a woman was trying out the men’s product A314 too.
If you search for a typically masculine phero, say, and pick “show threads” then look at all the posts from the women’s forum, you might find something of interest there.
No they dont cancel each other out but as ntk pointed out you may get a slightly different reaction then what you see reported i the forum.
Now if your using a male mix like A314, AMMO or TUTH even with female mones on you can give off a less feminine butch vibe. Small amounts are the key.
Generally when I wear mens mones I can tell right away if I have to much on. People, men and women tend to ignore me. I dont think its a OD as much as it is that I have such a foreign mone signature on that it turns them off or confuses them.
With the right amount on I get a nice alpha vibe, TUTH I use in dabs to spice it up in the bedroom because it makes men moe aggressive and because of the self effect.
Tish