Sure pheromones work. Artificial ones can already be made and works very well. If you're a moth. It lets you smell a possible mate from miles away.

No one has found human pheromones yet. At least those that make you attractive to the opposite sex. And not every species has been found to use it. (Note that this is different from saying that some species has been found to not use it).

There is a story based on this by Eugie Foster. But it's only a science fiction story. Anybody selling your perfumes based on this is selling you snake oil.

http://escapepod.org/2010/10/07/ep261-only...when-shes-gone/