My son always tries to put his feet on me

My 2.5 year old has a weird comfort thing where he always wanted to put his bare feet on my bare skin. He will not go to sleep without doing it. It sends shivers up my spine and makes me feel enraged. I don’t know why I feel this way but I physically have to get away from him or I lose my shit. I honestly don’t know if I suffered some weird trauma as a child involving feet but I absolutely cannot stand it and I don’t know what to do about it. During the day if he gets hurt or something he will come over and try to lift up my shirt and put his fucking feet on me. I hate it so much. I’m like shaking even typing this and thinking about it. What is wrong with me? How can I stop him from doing this? Talking to him and telling him no doesn’t work, he freaks out if I don’t let him put his feet on me. Full meltdown.