By chance have you once had a runny nose? Possibly did you recover from the cold? Of course you did! You will not treat a cold directly, nevertheless your system usually develops immunity to a certain cold infection within several weeks. We call that healed by your personal immune response!

Grownups have in the past had a lot of the runny nose viruses. Parents have created immunity to the viruses they have actually had. So there are not so many cold infections remaining for parents to become infected with. That is why adults just acquire a few runny noses each year whereas children acquire 10-12 colds annually.
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