Perhaps have you once had a cold virus? Perchance did you heal from it? Naturally you survived it! You won't treat a runny nose directly, however your system normally establishes resistance to a particular cold virus within a few weeks. We call that being cured by your own immune response!

Parents have actually already had a lot of the rhinitis viruses. Grownups have acquired immunity to the colds they have had. So there are not numerous runny nose viruses around for parents to acquire. That is why adults just get infected with a few runny noses annually whereas youngsters may get 10-12 runny noses per year.
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