In reply to TheDrunkenBakers:
> Are you sure holding in a sneeze like that is healthy? I have horrific visions (see what i did there) of it popping out, which will probably smart a tad.
Holding a sneeze in can be very bad for you. It is an extremely violent muscular contraction, and to try to resist it can transfer the high stresses involved to areas not designed to cope with them, or to weakened areas susceptible to injury.
My father has a friend who tried to hold in a sneeze in the mid 1970's and hasn't walked since.