We believe it is extremely unlikely that cold sores are spread they inanimate objects as the virus needs human cells to live and inanimate objects just don’t provide that. In addition, it doesn’t just take a few little virus cells to infect someone – it takes a substantial amount of virus and the volume required is normally lost in the transmission from mouth to can to another person, for example. I don’t know why some websites suggest this as a normal method of transmission.
The experience with the carousel is definitely not a method of transmission – same principles apply here. Also, I doubt that she put her whole hand in her mouth. This is just not a rationale worry.
So do you have oral herpes? Have you ever had a test to determine this one way or another?