By chance have you previously had a runny nose? Possibly did you eliminate it? Of course you recovered! You can't cure a cold directly, nevertheless your system typically develops immunity to any type of cold infection within several weeks. That is called treated by your very own immunity!Grownups have in the past had a lot of the rhinitis viruses. Grownups have created resistance to the viruses they have suffered from. So there are not quite as many runny nose viruses existing for adults to become infected with. That is why grownups just get infected with a few runny noses each year and children get a dozen runny noses annually.