I was thinking about this the other night!
I can't stand watching people drink milk. I don't know what it is, I will have it in cereal, hot drinks etc... but couldn't drink a glass of it and couldn't watch someone else do it. Reminds me of a random coffee first date where we went to Starbucks and he ordered a glass of milk...it was only ever one date (not for the milk think, I'm not that shallow haha!).
I have a fear of standing too near to the edge of a Tube platform when the tube train is coming in case I get pushed off...very irrational! I'm fine otherwise, if anything am looking over as used to watch the cute little tube mice in the morning at Tottenham Court Rd on the way to work. I'm not really like it with normal trains.
I also have a wierd one about a powerful falling waterfall, I think it comes from watching one of the Superman films when I was little, one where they are round Niagara Falls. It's about being at the top and the risk of falling in or getting pushed or being pulled over. Random, I know! It's wierd as I went to Niagara Falls last year and it was all fine, not as I thought it'd be and even went on the Maid of the Mist and stood right by the top of one of them. It's wierd, more of an in my head fear!