en_tn/2co/02/15.md

we are to God the sweet aroma of Christ

Paul speaks of his ministry as if it were an offering or incense that was being burned, creating a pleasant smell to God. (See: rc://en/ta/man/jit/figs-metaphor)

the sweet aroma of Christ

Possible meanings are 1) "the sweet aroma which is the knowledge of Christ" or 2) "the sweet aroma that Christ offers."

those who are saved

This can be stated in active form. Alternate translation: "those whom God has saved" (See: rc://en/ta/man/jit/figs-activepassive)