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Hi, welcome to Science Fiction. I'm Dr Knowles.
And I'm Prof Mike McCork, from County Cork!
Today's question, please, BUD E?
Oh, bear with me there, love.
Ah, today's question comes from Dennis in Ennis...
Very common question.
Snot occurs when your nose creates a gooey substance known as mucus.
This gooey stuff, it's like a face lava, if you like.
Imagine there's a volcano inside your nose
and then it just erupts - bang!
-Now, this mucus...
Now, this mucus is mostly made up of water
but also contains salt, proteins and carbohydrates.
Its main job is to protect you from invaders.
These include germs, dust, pollen...
Flies, burglars, Vikings, other people's fingers, tennis balls...
Skip to the next bit, Professor.
Ahem! Now we all know that snots can be delicious, don't we?
But they are full of all sorts of unpleasant stuff
-so you should only eat them in moderation.
You should never eat them! It's totally gross!
Anyway, Dennis, producing snot is a normal and vital bodily function -
not a sign that your brain is melting.
Sure, that's just a load of old science fiction!
Anyone got a hanky? I've made a right mess.