And sure you will most likely get infected by a different cold, due to the fact that there exist more than 300 different cold infections. But you will certainly unlikely acquire the same runny nose infection that you had previously due to the fact that you have developed resistance to that particular cold virus.Adults have actually currently had a lot of the runny nose infections. Parents have actually established immunity to the colds they have suffered from. Therefore there are not quite as many cold infections existing for adults to acquire. That is why grownups only get a couple of runny noses per year and youngsters may get 10-12 colds per year.