Conceivably have you a while ago suffered through a common cold? Perhaps did you eliminate the problem? Obviously you got over it! You cannot heal a cold itself, yet your immune system normally creates immunity to a specific cold infection within a couple of days. That is called healed by your very own immunity!Parents have actually already had a great deal of the runny nose viruses. Parents have created immunity to the colds they have suffered from. So there are not quite as many runny nose viruses remaining for grownups to acquire. That is why adults just get a couple of colds each year and youngsters acquire 10-12 colds per year.