Perchance have you a while ago been down with a cold virus? Likely did you do away with the cold? Naturally you did! You will not heal a runny nose directly, but your body normally creates immunity to a specific cold virus within several days. We call that treated by your own immune system!Parents have already had a lot of the rhinitis viruses. Parents have established resistance to the colds they have actually had. So there are not quite as many cold infections remaining for grownups to acquire. That is why grownups only acquire a few colds each year and children may get 10-12 colds annually.