As some of you know, I am turned on by thinking about or viewing open mouths and throats, and also by thinking about or experiencing operations and anaesthesia. It all goes back to my childhood when I was in hospital a couple of times, first for my tonsillectomy (under ether in those days, when the child would invariably struggle as it encountered the choking fumes), then later for treatment and observation of a severe skin condition, when I had the opportunity to look around and see the effects on other children of having anaesthetic for tonsillectomy, etc. (nausea, bleeding, etc.) and realised that I had been subjected to that, too.
Then in recent correspondence with another member of Zity.Biz, who is turned on by thoughts of rectal thermometers, enemas, and the like, I learned how he had been similarly 'conditioned': by exposure in childhood to medical procedures for his recurring bowel condition and to various operations (e.g., tonsillectomy) where pre-op and post-op ministrations might involve enemas, suppositories, rectal thermometers, and injections in the butt. Not surprisingly, he experienced humiliation at many of these procedures, which might sometimes be seen by other patients and passers-by in the wards (the nurses weren't always zealous about how well they screened individual patients' beds).
I would love to see some posts here from others with fetishes and paraphilias (abnormal fantasies giving sexual arousal), and how they believe they got them. (This is potentially a very big topic, with many sidelights, and facets, but let's see what eventuates ...)