M.L.
Julia - I can't blame you for being on your guard after what happened to you. I would be more cautious too, especially when you have your little ones with you.
This woman probably turned around to the people with her to make HERSELF feel better because she probably knew she should not have touched your baby. Who knows?
I can see both sides of this, and why people do these things. My Mother is one of them! She cannot resist a cute baby! She thinks nothing of touching a strangers baby's hands and would even kiss them! I tell her to STOP IT! It is RUDE! I also understand the joy that babies bring to people. They smile and cast no judgement on strangers and warm people's hearts. That is a wonderful thing. Whenever I would catch someone staring and smiling at my babies, I would smile back and have my arm between my child and the stranger always keeping a safe distance. Most people can catch on to body language. For those that can't, you can try a couple of techniques, depending on the situation. Try to position your baby where strangers can't reach them. If someone trys to approach/touch them, the least offensive way to tell them, I have found, is this:
"My child is JUST getting over a bad cold and I would appreciate it if you wouldn't touch him/her. Sorry. Thanks for understanding." Then smile.
Most people will get it. If they don't, they are either ignorant or have never had children themselves, and that is NOT your problem. Stay firm, and polite, and your children will be healthier for it!