I saw that same formos one, wondered why they used an f and discounted it for some other reason. I'll look formos (or phormos) up in my Greek dictionary when I get home. No reason the Latin couldn't have come from the Greek but words of that sort didn't normally change gender in the process. The geocities site traces cheese back through Latin to I.E. base *kwat- "to ferment, become sour." AHD doesn't list kwat- in its list of IE roots.