MYLAR COMC BOOK BAGS WORK!!!
Only six trade paperbacks were damaged out of about 700 comics and trade paperbacks. Two copies of the same one were never bagged
and a three-pack set that came in its own hard paperboard collector case that couldn't be bagged with any normal comic book bag were exposed to water. The three comic book boxes were utterly soaked, so I am amazed and grateful.
Been dealing with that and clearing out the carpet fragments that were under the comics and a bunch of plastic containers with all of my college memorabilia, pro sports collectibles from games I attended, and my band swag (including audio and video recordings, set lists, signed albums, etc.), which were thankfully unaffected as that stuff can't be replaced.