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Aromatherapy is extremely useful. If you want to go to sleep at night, and you have an aroma that calms your mind, it will help you sleep.

"Not My Job: Deepak Chopra Plays "Yes, We Cannes". "Wait Wait...Don't Tell Me!" with Peter Sagal, www.npr.org. June 1, 2013.
Aromatherapy is extremely useful. If you want to go to sleep at night, and you have an aroma that calms your mind, it will help you sleep.