I used to exhibit at gun shows. I always felt as safe at a gun show as anywhere else. Much safer than some places I've been. NDs at shows were always something you heard about, but never witnessed, kind of like Sasquatch and space aliens.
If you ever find yourself afraid for your life, running into a gun show would be a good choice if available.
If you're worried about safety, don't drive to a gun show though-- you're vastly more likely to be injured or killed during the drive to and from the gun show than while you're there. I suspect this would be true even if 3/4 of the people at the gun show were drunk and all the people on the roads that day were sober.
On that note; I go to my kid's school football games (you know where this is going, right?) and at each and every game there is an ambulance, complete with paramedic crew, on location all during the game.
Ever seen an ambulance and crew on standby at a gun show? How about at a shooting match, where people are, you know, actually loading and firing guns?
Me neither.
Do NDs happen? Yes. Very, very rarely. Usually, they result in no injuries or serious property damage. Do people get killed falling down in their own homes? Yes, and it is a more common occurrence.
Carry on.