'Foul' in the Bible

The fish that are in the Nile will die, and the Nile will become foul, and the Egyptians will find difficulty in drinking water from the Nile.”’”

The fish that were in the Nile died, and the Nile became foul, so that the Egyptians could not drink water from the Nile. And the blood was through all the land of Egypt.

So they piled them in heaps, and the land became foul.

But they did not listen to Moses, and some left part of it until morning, and it bred worms and became foul; and Moses was angry with them.

So they put it aside until morning, as Moses had ordered, and it did not become foul nor was there any worm in it.