Aromatherapy is the use of essential oils (different balms etc) for healing purposes. The molecules enter in our nose, then pass directly in our brain. Our immune system responds on this "provocation" creating complicated chemical processes. That is how it works. And that is why it works much more fast than any other therapy.
Did you know that the Antic Romans were very able to create perfumes? And they made them from roses and lilies. This production was so large that it's possible to call it industry. In such excavation sites like Pompei and nearby villas were found entire plantations of flowers.
Now, you are maybe curious, why I wrote that strange title? Was it only to attract your attention? No, it's truth. I really do not support most smells and am not a good object for aromatherapy. Since I prefer alternative medicines, as you know, I would like to use essential oils for the cures. But... Nothing to do. Why? I don't know. It's an error of the Creator, I think. Or maybe, better, it's His plan, since it's difficult to think that the Creator can to have errors. :-)))