God bless you! I also stifle my sneezes most of the time, so I can totally relate! Except I usually hold my nose closed and I manage to keep my sneezes completely silent. I don't make any sound that would be noticeable to people around me, except just a slow sigh which I have to do in order to let the air out. I have always hated sneezing and I don't ever like to let anyone see or hear me sneezing.