What is peanut dust?!

Question: I had some cookies from mcdonalds and on the back of the package it said "Cookies may have been exposed to peanut dust." I mean what? do they grind peanuts into dust now? I don't get it...

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Answers: I had some cookies from mcdonalds and on the back of the package it said "Cookies may have been exposed to peanut dust." I mean what? do they grind peanuts into dust now? I don't get it...

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factories that make these cookies prolly proccess peanuts
the peanuts get crushed and stuff
so theres like "peanut dust"

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