What is the significance of the 'sweet savor' mentioned in Genesis?

In Genesis 8:21, the Lord smelled the 'sweet savor' of Noah's sacrifices, indicating His acceptance. This concept carries into the New Testament, where Ephesians 5:2 describes Christ's sacrificial death as a 'sweet-smelling savor' to God. It illustrates that the only acceptable means of worship is through Christ's atonement, making His sacrifice the fragrance that pleases God. This underscores that without Christ's sacrifice, all human actions are insufficient and cannot be pleasing to God.