Can you control how loud you sneeze?
It's an earth-shattering roar that usually has someone within an earshot thinking "do you really have to do that?"
They say they can't help it — it's just how they sneeze.
So how is it that some people can let out a dainty outburst as quiet as a mouse while others sound like they're ripping a hole in the fabric of the universe?
If you're a loud sneezer, you might find the answer a bit on the nose.
What is a sneeze? A sneeze is believed to be a defence mechanism to protect your airways from noxious fumes, particles and other harmful environmental factors.
Professor Richard Harvey, St Vincents and Macquarie University Hospitals, says it is triggered when the nerves in your nose detect a change in temperature or pain.
That's why things like air conditioning, smoke or the even the sun can make you sneeze.
