A nasal and pharyngeal spray solution for use in spraying into the nose and mouth to protect the mucosa from noxious viruses, bacteria and fungi and excessive drying, in situations of high risk, such as the cabins of commercial aircraft, is comprised of a saline solution of Proanthocyanidins and ascorbic acid. The ‘fresh mix’ delivery system is an appropriately closed, sterile, oxygen-excluding, pressurized container.