By chance have you heretofore endured acute rhinitis? Perchance did you do away with the infection? Naturally you did! You can't heal a runny nose itself, yet your system generally creates immunity to any cold infection within several days. That is called cured by your very own immune response!Adults have currently had a great deal of the cold viruses. Adults have developed immunity to the viruses they have actually had. Therefore there are not lots of cold infections remaining for adults to become infected with. That is why parents just get a few runny noses annually whereas youngsters may get 10-12 colds each year.