The burnt sacrifice together with its grain offering is described as a sacrifice and sweet smelling savour to God in Leviticus 1.Paul also mentions that Christ's offering is a sweet smelling savour to God.
Ephesians 5:1-2 KJV
1 Be ye therefore followers of God, as dear children; 2 And walk in love, as Christ also hath loved us, and hath given himself for us an offering and a sacrifice to God for a sweetsmelling savour
Leviticus 1:7 KJV
7 And the sons of Aaron the priest shall put fire upon the altar, and lay the wood in order upon the fire: 8 And the priests, Aaron's sons, shall lay the parts, the head, and the fat, in order upon the wood that is on the fire which is upon the altar: 9 But his inwards and his legs shall he wash in water: and the priest shall burn all on the altar, to be a burnt sacrifice, an offering made by fire, of a sweet savour unto the LORD
Did Paul have in sight the book of Leviticus here?