Perhaps have you formerly endured a cold? Maybe did you eliminate the virus? Naturally you did! You cannot heal a runny nose directly, yet your immune system usually establishes resistance to any cold infection within several days. That is called being healed by your personal immune response!Grownups have in the past had a lot of the runny nose viruses. Grownups have actually established resistance to the colds they have had. So there are not quite as many runny nose viruses around for parents to catch. That is why adults only acquire a couple of colds per year and children acquire a dozen runny noses per year.