If beef taste like fish then throw it out.
It will have a greenish tint to it. And it will be a little slimy and have a bad smell
The exact amount of time varies on the environment it's left in, though the first signs of bad beef is an odd discoloration and a rancid smell.
it smells like a substance that has a bad smell it stinks very bad
When it smells bad or is slimy to the touch. Usually the smell is the first indicator.
bad
Bad.
bad
It will smell and may have mold on it. The mold can be yellowish in color.
they smell very bad
It doesn't really have a "bad" smell, but it does smell much like tin and other metals. It doesn't smell as bad as rusting tin, since it doesn't contain iron.
Oh its not good at all, they smell like rotten eggs or really really bad like the mushroom farm.