Oil of oregano is an essential oil that is extracted from the oregano plant. It has been traditionally used for its medicinal properties, including its ability to fight off infections. Here are some potential benefits of using oil of oregano for sinus infections: 1. Antibacterial and antifungal properties: Oil of oregano has been shown to have strong antibacterial and antifungal properties, which can help fight off the bacteria or fungi causing the sinus infection. 2. Anti-inflammatory propertie