I once took a didgeridoo course and played for quite a while after that. One weekend of 2×3 hours of didgeridoo playing, and my nose was incredibly clear. Like never before and never again since.
By the way, you can practice circular breathing very well in the shower. Take water in your mouth and breathe in through your nose while simultaneously spraying the water out through your lips.
By the way, you can practice circular breathing very well in the shower. Take water in your mouth and breathe in through your nose while simultaneously spraying the water out through your lips.