i don’t think its possible (but i’m not an expert on that) due to the sudden differential of pressure you encounter. I assume it’s like being punched.
Best is to react quickly for yourself, then look and help the people around you…
If plane go quickly under 10000 feets, the unconscious people will wake-up (normally)
You have free access to this piece as it’s just below. You put a bucket below, unscrew, empty it, screw and you’re down with the clogging.
The goal of this plastic receptable is to avoid costly clogging down the line by intercepting it locally. And also recover object that fall like ring while watching your hands.