This can be translated in active form. Alternate translation: "The dead bodies of these animals will make you unclean if you touch any of them" (See: [[rc://en/ta/man/translate/figs-activepassive]])
A person who is unacceptable for God's purposes because he has touched one of these dead animals is spoken of as if the person were physically unclean. (See: [[rc://en/ta/man/translate/figs-metaphor]])