By any chance have you previously been down with a cold? Possibly did you heal from the cold? Obviously you got over it! You will not heal a common cold itself, however your body typically creates resistance to a specific cold virus within several weeks. We call that being healed by your very own immune system!Adults have previously had a great deal of the runny nose infections. Adults have established resistance to the viruses they have suffered from. So there are not numerous cold viruses around for parents to acquire. That is why adults just acquire a few runny noses per year and youngsters get 10-12 runny noses annually.