A: Why are you wearing a face mask?
B: I don't want to catch anything.
A: You won't get sick from breathing fresh air.
B: There are germs floating everywhere!
A: It is still unlikely that you will get sick.
B: Why do you say that?
A: Most of the time, we get sick from germs on our hands.
B: You're kidding, right?
A: No, we touch a lot of dirty things every day.
B: I need some hand sanitizer!
A: I didn't mean for you to become paranoid!
B: I'm not paranoid! I just want to be healthy.
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