Probably have you heretofore had a common cold virus? Possibly did you recover from the infection? Obviously you did! You can't treat an acute rhinitis itself, yet your body typically creates resistance to a specific cold infection within a couple of days. We call that healed by your own immunity!Grownups have already had a lot of the rhinitis infections. Adults have acquired resistance to the viruses they have suffered from. Therefore there are not numerous runny nose viruses around for parents to become infected with. That is why adults just get a few colds each year whereas children usually get 10-12 colds each year.