>Depends on the concentration you breath in as to which would cause a death first.
I live in farmland and anhydrous ammnia is nothing to screw around with.
It can cause freezing injury
it can cause chemical burns to skin, eyes, nose, mouth & lungs
even in low concentrations it is still SEVERELY irritating
and one thing often overlooked
when the fuel air combo is correct (a very narrow window for NH4) the stuff is highly flammable
being a heat source without carbon it is used in heat treating steel in certain processes
once upon a time they even had automobiles that would burn anhydrous as fuel