Do they make muzzles for children?

Another one of those "Oh no she didn't just say that" moments...
Tonight we were at Harmons (Yes, I know on Sunday, I guess we all have our faults) to get a few things that were going off sale. We chose a checkstand and started to check out. Tylar looked at the checker for a long minute and turned to me and said, "Mom, he's got the chichen pox, BAD!" Now, understand that the checker was probably barely old enough to drive, and he was obviously plagued with teenage acne. I mean really bad acne. I looked at Ty and replied, "No, sis it's not chicken pox, and you need to be quiet."
She barked back, "Then he must have gotten bit by lots of mosquitoes! The poor guy!"
Again, this time in more of a whisper I said, "No Ty. Its not that either. I'll tell you about it in the car."
So she was quiet about it until we get in the car. We had quite the talk about not talking about other people in front of them. That if she has a question or coment about something, then she should wait until we wer away from that person to ask questions about the issue. I explained briefly about acne and then Braydon chimed in..."Mom, is it contagious? 'Cause he touched our stuff. Are we going to get it?" I then explained how acne works and that it is not contagious. Phew! I guess I should start looking more carefully at who we choose to check us out at the stored we go to.