How can people protect their selves from the common cold?

How can people protect their selves from the common cold?
The only way to protect from the common cold is to avoid exposingyourself to the virus that causes it. The only way to accomplishthis is to avoid exposure to people who already have a cold orcarry the virus. Wearing the common cloth or paper filter mask mayprevent breathing in moisture droplets "sneezed out" by others butit will not block the virus which is so much smaller than what themask will allow through so it won't help.