Colds and sinus infections originate from airborne virus and bacteria that lodge in the warm, moist mucous membranes of the nasal and sinus passages. These pathogens form colonies there that can double in size every 20 minutes! Confined areas such as offices and airplanes are filled with airborne pathogens. If the infection is not terminated, the delicate nasal and sinus membranes can become completely inflamed, resulting in a serious head cold or sinus infection. Cold Rescue is great as a preventative, so keep one in your pocket, purse, or desk drawer!