Decomposition of the gastrointestinal tract results in a dark, foul-smelling liquid called “purge fluid” that is forced out of the nose and mouth due to gas pressure in the intestine. The bloat stage is characterized by a shift in the bacterial population from aerobic to anaerobic bacterial species. The gases under the skin also causes the skin to turn green and black. Cells in tissues break down and release hydrolytic enzymes, and the top layer of skin may become loosened, leading to skin slippage.
Fig.1 Decomposition with purge fluid.
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