I have never heard of cheese being related to ASD. However I have heard of gluten being related.

As for either being categorized as a drug? IDK what to think about that. I have heard the theories and read the articles, but I am not sure how it really correlates directly to ASD.

I know (I, personally) have bad side-affects on both gluten and lactose, that cause very uncomfortable and/or odd symptoms (like anxiety, depression, sleep disturbances). But I never related it to drug addiction or withdraw. I attribute it more to allergy (or intolerance).