Originally Posted by Capite
I can feel that my eustachian tubes are ok, and I can open them at will.
You are joking, yes?
Really the walls from the sinuses to the brain are pretty thin. It can be a significant complication of sinus surgery. Again, I have never heard of anyone flying and rupturing a sinus and leaking cerebrospinal fluid, but stuff happens. Look at the bright side, if you are the first, you will be in the journals.