Headaches, sinus, articular pain, or pain caused by excessive muscular release could occur. They making of fresh air. A pain reliever is also used as an oil diffuser. The most aromatic plants that help to remove the odor are lavender, pepper, rosemary, jasmine, lemon, geranium, camomile, and spearmint. Learn more about "What is the Advantage of an Oil Diffuser?".