Blue Mold on White Mold-Ripened Cheese
Woops, there's blue mold on my Camembert. If you begin to see blue mold developing on a white mold-ripened cheese, that's a sign that there is a moisture problem. Either the humidity in the curing room is too high or too much moisture remained in the cheese during its production. So, reduce the humidity in the curing room and thoroughly clean and disinfect the surface on which the cheese was curing to eliminate the blue mold.
Now if you see black, furry mold called poil de chat (cat's hair) begin to develop, dab it carefully with salt to remove it and prevent it from spreading.