When melting, styrofoam releases cyanide gas. The structual type of styrofoam is what I’m talking about, I’m not sure if dixie cup foam and sheet stock styrofoam is the same, though.
Do you have a cite?
AFAIK, styrofoam is polystyrene blown with either HFCs or butane and contains no nitrogen whatsoever. So unless someone (who will become very rich) has found a method for atmospheric nitrogen fixation, I’d take that with a pinch of salt…unless you smell the almonds and start to suffer from cyanosis, then head for the amyl nitrate 
“ìBurnt outî Styrofoam will produce cyanide gas. Although not generally associated with acute disease, long-term exposure may lead to symptoms. The symptoms most commonly reported in long-term exposure are breathing difficulty, headache, dizziness, nausea or vomiting, a bitter or almond taste in the mouth, hoarseness, conjunctivitis, palpitations, chest pains, weight loss, weakness, sleep disturbances, and altered mental status.11”
I know this is a reputable source since the same author states:
“Saws can cause lacerations and amputations.”
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You can try here:
http://www.oitlnet.com/cyanides/potcyan.htm
It comes in 50kg drums. Apparently for the secret government agency looking to stock up…
I wonder how much it would cost to get thatFedExed from India.