There are many benefits that come with scented candles. They play a significant role in the physiological effects of your mood. The soothing effect that candles bring is  based on how the brain processes smells. 

The smell of scented candles stimulate the limbic system, which is an area in the brain responsible for our memory and emotions. 

You may be drawn to specific scents due to the memories associated with that smell. Some scents trigger the same hormones repeatedly in some people. Choose a scented candle that can complement your mood, as this can make a lot of difference.