Long COVID recurring episodes, temporary relief from nose-pinching breathing

Summary

Plover 70838 described recurring episodes and a self-discovered way to get temporary relief: pinching the nose fully and trying to inhale through it for 30 seconds, until feeling a little discomfort in the lungs, ear and nose, and repeating if it was not gone. They said that since they began doing this, found out of misery, they had been having fewer and fewer episodes. They gave no onset date or cause and did not say how much the problem limited them.