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httle as 600 parts per million of this pungent gas will restrict breathing and make artificial respiration necessary if it is inhaled. The gas tends to paralyze a person’s diaphragm. Individuals can detect its rotten egg smell when they breathe it in small quantities, but the smell is not so obvious when the gas is in higher concentrations.
“Anyone working in or around manure pits or tanks should use self-contained breathing apparatus similar to that used by underwater sports enthusiasts. Proper ventilation also will remove the harmful gas.
Ammonia may form from material that is high in nitrogen, such as manure. It is lighter than air and easily detected. Highly irritating to the eyes and lungs, ammonia can be controlled by ventilation.
Carbon dioxide is heavier than air
84.5%