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Perhaps have you a while ago had a runny nose? Conceivably did you get rid of the cold? Certainly you survived it! You won't treat a common cold directly, yet your system usually establishes resistance to any cold infection within a couple of weeks. That is called healed by your very own immunity!

Parents have currently had a lot of the cold infections. Adults have acquired resistance to the colds they have suffered from. Therefore there are not so numerous of cold infections remaining for grownups to catch. That is why parents only get infected with a couple of runny noses annually and children usually get a dozen colds each year.
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