You can catch germs by if people sneeze or cough around you or they sneeze into their hand or someyhing and everyone touches that thing like the remote control or the banister so then they get ill...
Germs can catch germs because a good germ can get onto another
they either help you or they can hurt you they either help you or they can hurt you
From other things such as people, dust, air, water andeveryday things.
It can harm your health and other thing such as the heart. Germ are actual aren't good to have.
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How to Prevent the Spread of Germs
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How to Treat Yourself When You Have a Cold