My 4 year old is fully toilet trained but is absolutely terrified of public hand dryers so will not use public toilets. I carry a carry potty around with me and, though it's bulky and a bit of a nuisance, it brings him peace of mind that he can use it. We are going to Florida in the summer and I'm worried about him using the toilet on the plane. Ideally, it would be a lot easier if I didn't have to carry a potty everywhere but he freaks out when I try to get him to use public toilets. It's the noise (he's on the never ending waiting list for an autism referral which I suspect makes his aversion much worse). I have tried showing him that I can turn the hand dryer off in a disabled toilet, I carry his headphones everywhere so that he can put them on and not worry about the noise and have tried explaining it to him but nothing is working. Has anyone experienced this or can offer any advice on what to try? I don't want to force him as he's so scared but I would like to try to help him overcome this fear. Thank you.