Well here's something that I wouldn't have believed I would be doing.
Filling my nasal cavities with salt water by squirting copious quantities up my nose using one of these:
A GP suggested it for my catarrh and rhinitis.
Its made a big difference and although it felt strange at first I find the sensation rather pleasant now.
If you have a stuffy nose, excess mucus etc it might be well worth trying.
Just thought that I would share that with you.