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I'm assuming you have the same problem my ex-wife had when she was making goat cheese. You may have a yeast culture in the environment of your kitchen. When ever she tried to make goat cheese in our kitchen the end result was always the same , a cheese product that had a stronger odor than limburger and was inedible. I suspicioned it had to do with her not using proper cleaning procedures in her milk parlor and that she might have been bringing the yeast into the kitchen on her milking utensils. Hope this is helpful and that you find a solution.