If such an animal dies and falls on something, that object will be unclean. This is true whether the object is made of wood, cloth, leather, or burlap. Whatever its use, you must dip it in water, and it will remain defiled until evening. After that, it will be ceremonially clean and may be used again.
3
And upon whatsoever any of them. —Better, and upon whatsoever anything of them, that is, the vessels in question…

And upon whatsoever [any] of them, when they are dead,
does fall, it shall be unclean
…

These laws seem to have been intended,
As a test of the people's obedience, as Adam was forbidden to eat from the tree of knowledge…
Charles Ellicott
CharlesEllicott