Possibly have you ever been down with a common cold virus? By chance did you eliminate the problem? Of course you recovered! You will not cure a runny nose itself, nevertheless your system typically establishes resistance to any cold virus within a couple of weeks. That is called being cured by your own immunity!Adults have actually already had a lot of the cold infections. Parents have created resistance to the colds they have had. So there are not lots of cold viruses remaining for adults to acquire. That is why parents just get infected with a couple of colds per year whereas kids acquire 10-12 colds each year.