>> The smells and gasses given off are incredible.
Actually, when the H2S concentrations get high enough to be deadly, they overload your sense of smell and you can’t smell it anymore. Then you just walk in and drop dead.
I think that manure = Ammonia
That’s what I posted as well. Too many people do not know about or understand H2S and farming/ranching.
Anything made of carbon, when it starts to decompose will release H2S. If there is enough, it will pool in low-lying areas and two breaths are all it takes to overpower and kill!