Pain is not always useful information.
Once I’ve burned my hand, turned off the burner, and treated the burns, my pain becomes much less helpful, and much more likely to distract me from whatever I might want to get done over the next few weeks. Particularly if I’m intelligent enough to remember the hand is injured and not re-injure it.
Also, for example, phantom pain from amputated limbs.
I regularly say things like this to the people closest to me. The phrasing is only awkward the first time, when I have to do a bit of backstory and explanation. Thereafter, a short phrase suffices to indicate that this sort of phenomenon is occuring.
I consider it a good intermediate rationality tactic. I’m not yet to the point where noticing that a feeling (anger, sadness) is irrational lets me eliminate it. But explicitly noting what is going on to my converational partner helps keep both of us from letting the situation worsen.