+1 for rinsing for a minute under warm water, which worked for me. Context: after several days of swimming in salt and fresh water over the course of a week, after the last dip, the power button seemed to be stuck, going into Emergency SOS mode over and over again. After a reboot, the button was still stuck, so it could not boot: it would show the Apple logo for a few seconds then reboot again. Washing under warm water and clicking the button repeatedly fixed it.
If re-opening a screen that was opened and re-attached using iFixit’s adhesive strips, I would strongly recommend heating it first with an iOpener, heat gun or hair dryer. 20 minutes after attaching with the iFixit adhesive I tried to open it again with the pizza slicer to fix something and cracked the screen on the left-hand side.
