Great discussion!
I'd say I've had 4 5.0's in the 2 1/2 years I've been traveling constantly. Wish there was a way to predict them - my seatmates probably think I'm going crazy. I've never had a hint of congestion before taking the flights.
Wow! Can't imagine the 8.0 and 9.0s!!
I hate the thought of taking meds for every flight but I might have to if it happens again. And - I always hydrate a LOT during flights (which is why I always get an aisle seat

)
Good luck to all you sinus people!
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