Adam Clarke on Leviticus 1:9

An offering - of a sweet savor - אשה ריח ניחוח ishsheh reiach nichoach, a fire-offering, an odour of rest, or, as the Septuagint express it, θυσια οσμη ευωδιας, "a sacrifice for a sweet-smelling savor;" which place St. Paul had evidently in view when he wrote Eph 5:2 : "Christ hath loved us, and hath given himself for us an offering, και θυσιαν - εις οσμην ευωδιας, and a sacrifice, for a sweet-smelling savor," where he uses the same terms as the Septuagint. Hence we find that the holocaust, or burnt-offering, typified the sacrifice and death of Christ for the sins of the world.