I can't really remember one event that triggered my phobia. I can remember every single time that I have v*d from about the age of 6 (which when thinking about it wasn't a lot in relation to other children I knew) As a child I don't really remember being that scared of it when it was happening but I did go though a stage when I was about 7/8 when I didn't eat very much which made my parents very worried. Now as an adult (26) I have vivid flashbacks to episodes of illness I had as a child which seems to reinforce the fear (I haven't v*d in 10 years) I am currently going through CBT therapy and have been asked by my therapist what triggered my phobia to which my answer was 'I don't really know.' When asking my parents if they knew of anything that could have triggered it that I may not remember or have blocked out they told me about an incident that happened when I was 3/4 years old where I had some sort of fit/seizure where I v*d everywhere and lost control of my bodily functions (this was a one off thing and docs didn't find anything wrong with me) I have no idea if it was this that triggered it as I have no memory of it