ive been having the exact same thing
dont worry, youre usually far too nervous/ready to pass out to bother with sneezing
as far as i can tell an over the counter allergy medication fixed it for me temporarily, just make sure theyre non drowsy
only thing worse than sneezing in an exam when its dead quiet is passing out and causing a row as your limp body drops off your chair






Actually thats not strictly true, theres plenty more embarrasing things
sitting the whole exam with your fly undone and wondering why people are always smiling at you, showing up missing a piece of clothing you knew you shouldve put on that morning
Sneezing is the least of your worries