The use of essential oils may be more effective than antibiotics in eliminating some antibiotic-resistant bacteria in a hospital setting. Research from the Technological Educational Institute of Ionian Islands in Greece studied eight essential oils from plants.
The use of essential oils like cinnamon and thyme work well against some Staphylococcus bacteria. Thyme essential oil wiped out bacteria in an hour.
Use of essential oils in a hospital setting could also result in less use of antibiotics, and therefore less risk of new strains of antibiotic-resistant bacteria.
Essential oils could also replace synthetic chemicals which have previously been used as preservatives.
"Australian aborigines used Tea tree oil to treat colds, sore throats, skin infections and insect bites and the remedy was sold commercially as a medicinal antiseptic from the early 20th century. Various scientific studies have demonstrated that essential oils are not only well tolerated, but are effective against a range of bacterial and fungal species. Their therapeutic value has been shown for the treatment of a variety of conditions, including acne, dandruff, head lice and oral infections."
http://www.sciencedaily.com/releases/2010/03/100330210942.htm