Essential oils have antibacterial, antiviral, and antifungal properties. However, it is not known if any combination diffused into the air is effective against micro-organisms. The concentration in the air is very low and unlikely to be effective. In the laboratory a mixture of wild orange, clove, cinnamon, eucalyptus and rosemary was used in a scientific experiment when mixing cells and influenza virus. In this experiment, the essential oil mixture reduced the infection of the cells.