Yale researchers say the key to staying healthy is your nose
Wash your hands, avoid sharing food, and wear a mask—there are many recommendations for staying healthy during cold and flu ...
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Nasal spray can help prevent colds - true or false?
Just a few puffs into each nostril, and you're protected against infection from nasty cold viruses - that is, according to claims made for many nasal sprays. Can they really do this?Well, not directly ...