I want to ask a new co-worker not to bring in his cultural food
Why don't you like them bringing food?
Only because it creeps me out and I don't like eating anything that is not my own culture.
Since you don't have to eat your co-workers food, you shouldn't judge him when he brings it in for himself. It is mean and bullying and kind of racist for you to make these demands.
I'm not a bad person. I don't judge and I am understanding of other cultures.
And that's why you should allow your co-worker to bring his own food, and to share it with others if he so chooses. It is very closed-minded of you to demand that he change his ways just because you don't want to eat the same things.