I'll have to see if there's a sex connection next time I have a sneezing fit. Usually I just sneeze once or twice, but if I sneeze a third time within a minute, I know I'm in for a full session.
I'll begin to sneeze once every 10 seconds, and it will last for 5 minutes then stop all at once. I actually look at my watch, so I can tract how much longer I've gotta put up with it, because it's amazingly reliable & predictable, always 5 minutes. I typically grab a towel to sneeze into, because they're very powerful, and really tire me out. I can't do much of anything else during the episode.
Fortunately I only get them every 2 or 3 weeks, and assume they're from an allergy. But if it's sex-related maybe I can get better control of this thing.