 144. Why is Navage perfect for allergy sufferers? Rhino Systems Medical Director Dr. Howard Levine explains. If someone's exposed to allergens, they can get rid of those immediately by washing out the nose. Navage works by pulling saline in one nostril, through the nose and out the other nostril, sucking out allergens, mucus, dust and germs. Experience on-the-spot relief so you can breathe easier, sleep better and feel healthier.