Conceivably have you previously been down with a cold? Maybe did you do away with the issue? Naturally you got over it! You won't heal a common cold itself, yet your body normally creates immunity to any cold infection within several weeks. That is called healed by your own immune system!Parents have actually in the past had a great deal of the cold viruses. Adults have developed immunity to the colds they have had. Therefore there are not numerous runny nose infections around for adults to become infected with. That is why parents just succumb to a couple of colds each year whereas children succumb to a dozen colds annually.