Alright, from my previous post on trioxane fuel I have discovered a few things. You guys probably already know this but I am going to share it anyway.
BOTH, the esbit solid hexamine and the trioxane solid fuel tabs give off formaldehyde, ammonia, carbon oxides, hydrogen cyanide and nitrogen oxides when burned. It is also used as a urinary tract infection antiseptic and in explosives.
Most of this stuff is carcinegenic and not stuff you want to breath in...even though esbit says you can use it in a tent. I am very confused about this...why would something so toxic be sold as "non-toxic"? This seems very strange to me.