Mystery #1Tier 1how germs travel
How exactly does a germ get from a sick person into a healthy one?
You cannot see a germ, yet somehow a cold hops from your friend straight to you. Nobody handed it over on purpose. So how does something far too small to see actually make the trip from one person's body into another's?

Your guess
How do you think a germ actually gets from a poorly person into a healthy one?
There's no single magic word to type, have a go in your own words, then reveal the answer to see how close you got.
Make a guess to unlock the hints and the answer.