Leviticus ch. 11 is all about clean and unclean animals and what the Israelites in Old Testament times could and couldn’t eat.
Therefore, every time someone hunted, ate a meal, went to a petting zoo, or came across roadkill, they had to ask themselves, “Is this clean or unclean?”
Land animals. Sea animals. Insects. Clean or unclean?
You shall not make yourselves detestable with any swarming thing that swarms, and you shall not defile yourselves with them, and become unclean through them. For I am the Lord your God. Consecrate yourselves therefore, and be holy, for I am holy. You shall not defile yourselves with any swarming thing that crawls on the ground. For I am the Lord who brought you up out of the land of Egypt to be your God. You shall therefore be holy, for I am holy.” (Leviticus 11:43-45)
Ch. 12 is all about childbirth and how that made one unclean.
Ch. 13 is all about skin diseases and mould on clothes and how that made one unclean.
Ch. 14 is all about skin diseases and mildew in houses and how that made one unclean.
Ch. 15 is all about different bodily discharges and how that made one unclean.
What was the point of all these rules?
The point of the rules was not personal hygiene, but a picture or symbol of sin.