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http://www.essentialoils.news/2017-11-07-why-lavender-is-the-most-important-essential-oil-to-use-right-now.html
  • Lemon
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https://passnownow.com/teens-know-immense-health-benefits-lemon/

Sources: https://www.healthline.com/health/what-is-aromatherapy, https://www.livescience.com/10457-smell.html, https://www.neuroscientificallychallenged.com/blog/know-your-brain-olfactory-bulb, https://www.pinterest.com/pin/217087644513436672/?lp=true, https://draxe.com/what-is-aromatherapy/, https://www.oilsbymadison.com/diy-how-tos/, https://naha.org/explore-aromatherapy/about-aromatherapy/most-commonly-used-essential-oils, https://jan.ucc.nau.edu/daa/lecture/pft.htm, https://journal.copdfoundation.org/jcopdf/id/1159/Prevalence-of-Low-Peak-Inspiratory-Flow-Rate-at-Discharge-in-Patients-Hospitalized-for-COPD-Exacerbation, https://www.healthline.com/health/endometriosis