We are sorry to hear that the Little Kitten has passed on.
You are only really supposed to give a Kitten,a small percentage of his meals in Human Food,but for the life of me,I cant think of anything that would kill a Kitten.
And if drinking out of the porcelain Water Bowl was lethal,I would have a lot fewer Found Cats.
RIP Little One,Now An Eternal Kitten Angel.