The pollution in the priests would be an aggravated one, inasmuch as they would have to forego their sacred functions. Compare Ezekiel 4:14; Ezekiel 44:31. The general prohibition occurs in Leviticus 11:39; Leviticus 17:15; Exodus 22:31.
Related Commentaries of Leviticus 22:8
Leviticus 22:8
8 That which dieth of itself, or is torn with beasts, he shall not eat to defile himself therewith: I am the LORD.