And definitely you will eventually acquire an additional runny nose virus, since there exist 300 different cold viruses. However you will certainly never ever acquire the exact same runny nose infection that you had in the past since you have actually created immunity to it.Parents have already had a lot of the cold infections. Adults have actually established immunity to the viruses they have actually had. So there are not lots of runny nose viruses remaining for adults to become infected with. That is why adults just succumb to a couple of colds each year and youngsters get 10-12 colds each year.