Can’t unblock it, no matter what I do. It is driving me nuts. Fucking allergies :(
I don’t know why this works or if it will work for you, but it works for me like 95% of the time when I have a mild cold or something. Breathe through your nose as slow as you possibly can. That’s it. Obviously don’t pass out so if you feel you have to, then take a few normal breaths. It helps if you’re calm and your heart rate slows down.
I used to get addicted to nasal sprays all the time and haven’t used one since I found this method.
I’ve heard it’s because your brain thinks (somewhat correctly) that you can’t breathe and releases “clear that clog right now” chemicals.
Holding your breath until you almost pass out works for the same reason, but I don’t recommend it.