try this :
https://forum.enlightenedstates.com/t/the-air-revitalizer/12486?u=limael
This two fields for help to Enhanced the blood circulation :
https://forum.enlightenedstates.com/t/nitric-oxide-boost/19614?u=limael
https://forum.enlightenedstates.com/t/three-purifiers/70973?u=limael
Maybe the humidity in your room, dry air, is impacting your nasal breathing.
The change in blood pressure when you lie down can cause the blood vessels in your nasal passages to swell.
Test this during the day by lying down on your bed (or another place) and see if it happens again.