question: Is the vapor of the antifreeze dangerous?

well,
crock pot I dont have so I used metal can, living in an apartment I did it in the kitchen.
with the motor and the mufler in without the plastic parts heated the antifreeze to something like 80 C (100 C is boiling).
turned the fire off and left it there for an hour, then brushed all the brown away with a metal brush.
Im very happy.

Thanks
Alex