Viruses, bacteria and even the office are not the problem. The problem is that you are letting fear run your life.
You need to start to desensitize yourself.
Do what you fear. Just a bit at a time.
There are any number of websites that will show you how to do it.
You can beat this if you want.
Or you can hide in your house for the rest of your life.
Choice is yours.
Very sound advice.