There are so many ways to make a room smell terrific: potpourri, candles, sprays, even those wacky jars stuffed with reeds (called reed diffusers). Fans of essential oils though, might get stumped for ways to let the oil scents fill a room. Two of the most popular methods are using cool evaporation and plugging in an aromatherapy electric diffuser.
Evaporation
The technique of using cool air to carry the fragrance of an essential oil has been around since the days of the Egyptians, and possibly even earlier. It
