TIL : If you consume food through your mouth -- the body will recognize it as "food" and let it pass.
Instead if, minute amount of it enters your body through your skin, body will develop immunity against it and you will get allergenic to that food.
Article : Why do Autumn babies have higher food allergies?
Answer as provided : due to the dry weather, they are exposed to more food particles than others.
Solution : Guess rub them more creams or whatever.