Are Pheromones in humans functional?

How and when does it happen if so.

Yes. And there are all kinds of threads on the subject here..
And specific question? Because your question covers a lot..

I’m new to this site and pheromones. I didn’t know they exist in us, only thought they worked in animals. Have you tried the sprays offered on this site, I haven’t purchased any but are they legit?

Yes they have identified a few that work in us. One of them is Androstenone, a highly sexual pheromone, already known to work in pigs with mating. Interesting that we would also contain this pheromone. I have tried many of the products here and they work for their given functions. But if I were you I’d hold off of purchasing as they are rebuilding their store.

Search the theory section and start reading and you will gain a great understanding of pheromones..