it is physically impossible for my left sinus to hold anything else.
My right sinus is functioning at about 1/3 capacity
When I used the decongestants, I get 100% oxygen flow (which is abnormal for me) and then I get high.
Today I am going as decongestant free as possible in preparation for tomorrow. Although since my sinuses are already FUBAR, I might as well replace the furnace filters.