freezer restoration revisited

Hi,

I cleaned the mildew out of a bench freezer I was given, but it turns out there's some real rust, too, where the white plastic coating of the interior has disappeared. Is there anything I can do about the missing plastic coating? Do I need to do anything about it? Is the freezer safe to use in this state or is there some danger of contamination of the food inside the freezer?

Thanks for any help,

George