I sure wouldnt do that. As Karen said, flecks of paint would likely come off, especially since making cheese requires stirring.
Until you can get a ss pot, you might consider using a large food-grade white plastic bucket in a container/sink of hot water, and dont make cheeses that require higher cooking temperatures. You can sometimes get them used and free by asking at deli and bakery counters in grocery stores.
Of course using plastic to prepare foods has as many pros and cons as does using aluminum.