"Our immune system starts with our nose. The purpose of the nose is to filter, warm, and moisten air before it enters our body. Each nasal breath draws nitric oxide from our sinuses and carries it into our lungs. Nitric oxide is our natural immune protection against respiratory infection as it kills virus, bacteria, and fungus," Steven Olmos, DDS, who is board-certified in chronic pain and sleep-related breathing disorders, told a news portal. That is why it is important to use a nasal spray to stay hydrated while you on the plane.
by Darielle Britto