This has also come to mind in the last few weeks.
That someone I know is getting chelation therapy. It came as an idea or in print but not out loud because I was thinking it's pronounced "she-lay-shun". The real pronunciation is "key-lay-shun" I found out tonight, because I finally decided to look it up.
However, it came to me very strongly.
There was absolutely no other reason for me to have this come to my mind. I wasn't thinking of medical procedures or anything.
I haven't heard people talking about it.