It is already proven that scents have their power. When someone passed by and you have smelled his cologne, you can be able to have an emotion. If it is the scent that you like, it will give you also a good feeling. But if it is the one that you do not like, you feel negative also. You may have encountered at one point when someone also has a perfume that is too strong and so you want to be away from that person. Like this, a smell has an effect and you may trigger them if you want.
If you want to have some kind of feeling like relaxation, you can smell one that would give that feeling. An example is a lavender. This is known to soothe and calm your nerves. So if you want to be able to relax as you are experiencing something that upsets you then you can smell one. That is who powerful scents are. They could also be used to let you have a good mind and they can also increase the level of your confidence. They call it aromatherapy.
It has been used thousands of years ago already and it has proved useful in many circumstances. One of the ways that you can smell those scents is by candles. There are many candles that are being produced with that purpose. They infuse scents with them so that they can emit as they are lighted. It is easy then to attain some time of relaxation if you can avail one of those candles.