Many people use this oil without realizing it. Over-the-counter vapor or chest rubs marketed to suppress coughs often contain eucalyptus oil. Or they may include the oil’s key compound, called eucalyptol or cineole. A study published in the Alternative Medicine Review found that eucalyptol has an antimicrobial effect and may fight off bacteria that cause illnesses. Eucalyptol may also help to reduce inflammation, relieve pain, and ease muscle tension that can result from a cold or flu.
Here's are two ways eucalyptus essential oil can be used to calm a cough:
• add a few drops of eucalyptus oil to 1 ounce of carrier oil and rubbing the mixture onto the chest and throat. Some types of carrier oils are: olive oil, coconut oil, or grapeseed oil.
• Dilute eucalyptus oil in boiling water and inhaling the steam.
Source: https://pathwayswellnessprogram.com/essential-oils...