Originally Posted by
Confusedpax
Daft question here, but why is it everytime I've flown Ryanair, i get a bad sinus headache
That would be the constant bombardment by very loud PA announcements to wear you down and beat you into submission to hand over your cash to them.
Depending on their success rate, they'll try to deafen you further with a badly recorded fanfare blasted out at you after landing to complete the job.
It could be an allergy to something on board Ryanair planes
Ah! that widens the field - many have a distinct allergy simply to being onboard a Ryanair plane!