"Several areas adjacent to the respiratory tract have one thing in common: They're so small that very little edema (swelling) is necessary to obstruct them. These include the middle ear and the olfactory recess, which controls our sense of smell. When episodes of sinus pain, middle ear problems and loss of sense of smell occur, look to allergy as the cause." - Ralph Bookman, M.D
This is a poll to see how many of us experience reduced or absent sense of smell during POIS.