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 ...

Viruses and germs lurk everywhere: on surfaces that we touch and in the air. People catch most of them by breathing them in. ...

Do you blow your nose so hard that your head starts reeling Doing that will simply exacerbate your symptoms Read on to know ...