That's a very interesting question! I'm sure you know that when you have a cold, the mucus in your nose gets runny and drips out of your nose because of gravity. In space, however, there is no gravity, so if you have a nose full of mucus while floating around in space, there wouldn't be any gravity to pull the mucus down. Your nose will probably just be clogged with mucus and not drip out.

Great question! In space, there is very low gravitational force on astronauts. In this condition, water molecules are not being pulled towards the ground, and will float (like astronauts). So when you´re in space, your nose won´t drip like it does on earth. But you could still blow your nose to get the mucous (snot) out.