DD is three so most of this has passed her by so far. However today we saw several people wearing masks and she asked why. I told her they were worried about germs and after the inevitable why, why, why questions, I said that the people wearing masks might have germs and they were worried about other people catching them. The man we were passing (wearing a mask) looked incredulous but I didn’t know what to say in the moment and didn’t want to frighten her or think she had to wear a mask. Any suggestions?