Yes, essential oils have powerful anti-viral, anti-bacterial and anti-fungal properties. While some oils might have more of a rep for germ killing than others, nearly all essential oils contain powerful anti-oxidants that heal while warding off nasty things like mold, bacteria and viruses. The most well-known oils for killing germs include lemon oil, clove oil, rosemary oil, cinnamon leaf oil, and eucalyptus oil. However, thyme oil and oregano oil are also cited as being able to destroy viruses and bacteria on contact. They just may not be as popular due to their rather pungent aroma. You can make up your own essential oil blends, for both personal use and for cleaning up around the house.