It's like everyday - Lemmy.World

It’s actually normal.
Your nostrils cycle between like this so that the one can take a break from the air flow and mitigate drying out.
More info for those who are curious en.m.wikipedia.org/wiki/Nasal_cycle
Nasal cycle - Wikipedia

Yes, and most importantly I would say : immune system’s way of cleaning each side…
The clogging is caused by the swelling (with the blood vessels and the action of blood’s white cells … or … maybe I should read the article again)