Conceivably have you hitherto suffered through a runny nose? Peradventure did you heal from the infection? Obviously you did! You can not heal a cold directly, but your immune system usually develops immunity to a certain cold virus within a couple of weeks. That is called healed by your personal immunity!Parents have currently had a lot of the runny nose viruses. Parents have established resistance to the ones they have actually had. Therefore there are not lots of cold viruses remaining for adults to catch. That is why parents just succumb to a couple of colds per year whereas youngsters usually get 10-12 runny noses annually.