Perhaps have you ever suffered through a cold virus? Probably did you do away with the virus? Naturally you got over it! You can't cure a runny nose itself, yet your body generally develops immunity to any type of cold infection within several weeks. That is called being cured by your personal immunity!Parents have actually in the past had a great deal of the rhinitis viruses. Grownups have developed immunity to the viruses they have had. Therefore there are not so many cold viruses existing for adults to become infected with. That is why adults only succumb to a couple of runny noses annually whereas kids may get a dozen colds per year.