Malachi 2
Admonition for the Priests
1 "And now this admonition is for you, O priests. 2 If you do not listen, and if you do not set your heart to honor my name," says the LORD Almighty, "I will send a curse upon you, and I will curse your blessings. Yes, I have already cursed them, because you have not set your heart to honor me.
3 "Because of you I will rebuke [a] your descendants ; I will spread on your faces the offal from your festival sacrifices, and you will be carried off with it.
I will have to check out the word offal but what ever it is its related to the animal sacrifices. so at best its the animal dung but the word is odd.
ok here is from the new living translation
its animal dung
Malachi 2
A Warning to the Priests
“Listen, you priests—this command is for you! 2 Listen to me and make up your minds to honor my name,” says the Lord of Heaven’s Armies, “or I will bring a terrible curse against you. I will curse even the blessings you receive. Indeed, I have already cursed them, because you have not taken my warning to heart. 3 I will punish your descendants and splatter your faces with the manure from your festival sacrifices, and I will throw you on the manure pile.