Peradventure have you once been down with a cold virus? Probably did you heal from the issue? Of course you did! You won't treat a runny nose itself, however your immune system usually establishes resistance to any type of cold virus within several weeks. That is called cured by your very own immune system!Grownups have in the past had a lot of the cold infections. Parents have actually established resistance to the ones they have actually suffered from. So there are not as many cold viruses remaining for adults to catch. That is why adults only get infected with a few colds each year and children get a dozen colds per year.