The easiest method is placing a few drops of essential oil — Hurd recommends mugwort or lavender — on your pillow, then breathing in the aroma as you fall asleep. (businessinsider.com)
As suggested from a few other blogs I read, I add a few drops of an essential oil (needs to be from a company that sells eos that can be consumed like Doterra or Sparks Naturals) to help aide in fighting off colds / viruses / etc. (livingthenourishedlife.com)