How harmful is overheated butter?

i accidentally overheated the butter because i had something going on while i had it heating up.. i fried my eggs in it anyway then i just decided to see if it was safe i did a search and it said overheated oils cause toxic fumes and radicals that are harmful to human, i did not eat the food but i was breathing in... show more i accidentally overheated the butter because i had something going on while i had it heating up.. i fried my eggs in it anyway then i just decided to see if it was safe i did a search and it said overheated oils cause toxic fumes and radicals that are harmful to human, i did not eat the food but i was breathing in the smell for a bit.
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