I've done quite a bit of research on the 8ch suicide forum and discovered I have a couple more reliable and relatively peaceful options to ctb. I could use the CO method by burning charcoal in my chimney starter until the coals are grey and not smoking, then dump them in a bucket and carry it to my car. Or I could mix formic acid with sulfuric acid to chemically generate CO. Another option is to mix hydrochloric acid with lime sulfur (polysulfide) to create hydrogen sulfide.