Perhaps have you a while ago been down with a runny nose? By any chance did you eliminate it? Obviously you recovered! You can not treat a common cold itself, however your immune system usually creates immunity to a specific cold infection within several weeks. That is called being cured by your very own immune response!Grownups have actually previously had a great deal of the cold infections. Parents have actually acquired immunity to the ones they have actually had. So there are not so many runny nose infections around for grownups to become infected with. That is why parents only get infected with a couple of colds each year whereas children usually get a dozen colds each year.