Researchers say their findings could offer a cheap and easy way to stop people falling severely ill with respiratory infections Using nasal sprays ... using a gel or saline spray.

Treat allergies and asthma. Continue using a corticosteroid spray. Use a nasal spray or rinse with a saline solution. Avoid dust, dirt, smoke, or other nasal irritants. Nasal polyps are ...

One of the most important precautions is to keep your nasal passages moist. You can do this with the help of an over-the-counter salt water (saline) spray. Keep a bottle handy, and give each ...