Is a burnt plastic a toxic fume?

i have a 7 yr old daughter and her cousins came over. as a night light they put a blanket over a lamp. the next morning there was no fire but there was a whole in it. they must've been breathing the burnt plastic, so is that a toxiic fume? we threw it in the trash, but the smell is still there and i used... show more i have a 7 yr old daughter and her cousins came over. as a night light they put a blanket over a lamp. the next morning there was no fire but there was a whole in it. they must've been breathing the burnt plastic, so is that a toxiic fume? we threw it in the trash, but the smell is still there and i used febreez and it went away however. is burnt plastic toxic?
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