And sure you will probably cave in to a different cold, since there are several hundred different cold viruses. But you will never ever acquire the exact same runny nose virus that you had in the past due to the fact that you have created immunity to that virus.Grownups have already had a great deal of the rhinitis infections. Parents have acquired immunity to the colds they have had. Therefore there are not numerous runny nose viruses around for grownups to acquire. That is why parents just succumb to a couple of colds per year and youngsters get 10-12 runny noses annually.