Can we get a citation for the toxicity of ABS? My Google-fu is failing me as I can only find articles that say the fumes can cause minor irritation when inhaled or in contact with the eyes.
"Primary gas-phase products of ABS thermal decomposition at very high temperatures have been shown to include carbon monoxide and hydrogen cyanide, as well as a variety of volatile organics (Rutkowski and Levin, 1986). Exposure to thermal decomposition products from ABS has also been shown to have toxic effects in both rats (Zitting and Savolainen, 1980) and mice (Schaper et al., 1994)."
from http://ac.els-cdn.com/S1352231013005086/1-s2.0-S135223101300...