And definitely you will most likely cave in to one more cold, since there are several hundred different runny nose infections. But you will unlikely get the very same runny nose virus that you had before because you have established resistance to that virus.

Adults have in the past had a lot of the cold viruses. Parents have actually acquired immunity to the colds they have actually suffered from. Therefore there are not quite as many cold viruses around for parents to catch. That is why adults only get infected with a couple of runny noses per year and youngsters succumb to a dozen runny noses each year.
https://www.evernote.com/shard/s318/sh/45b3e45f-3d44-9d1f-efab-0dbd5cd5d06d/d789d96221e7e8b6852235199d551da1