SNEEZING FACT FILE
Air leaves the nose during a sneeze at 95mph - faster than the wind in a Force 12 hurricane.
Around 40,000 droplets of mucous fly into the air with each sneeze.
Some studies have shown that sneezes can be delayed by firmly pressing the area below the nose with a finger,
Ancient Greeks believed sneezes were signs from the Gods.
In most cultures, people say "Good Health" or "health!" after a sneeze. The origins of the British "Bless You" are unknown - but have been linked tot he Medieval belief that souls could escape from the body during a sneeze.
Its a myth that eyes close during a sneeze to stop them flying out of the head. The involuntary blink is a side effect of the signal from the brain to the chest, face and stomach during a sneeze.
If you sneeze while driving at 70mph, your car will travel 300ft with your eyes closed.

My question is if 40,000 droplets of mucus fly into the air with each sneeze, who counted them?

researchers

Any force caused inside one's head that can generate a speed of 95 mph would be sufficient enough to knock your eyeballs from their sockets if not for the closed eye reflex, I would imagine.