 Hold in a sneeze calendar? Oh, I did find number three. Okay. Torn arteries. A really big sneeze can cause acute aortic dissection. That's where the inner layer of your body's main artery ruptures. And there have been documented cases of people breaking bones in their face sneezing and bones in their ear, which can cause hearing loss. Wow. Whatever you do, don't try to hold one in. A guy in Scotland tried it last year and blew out his windpipe. He was lucky to survive.