Brother Abraham spoke about the smell of a Christian from 2 Cor 2:14-17.

14But thanks be to God, who always leads us in triumphal procession in Christ and through us spreads everywhere the fragrance of the knowledge of him. 15For we are to God the aroma of Christ among those who are being saved and those who are perishing. 16To the one we are the smell of death; to the other, the fragrance of life. And who is equal to such a task? 17Unlike so many, we do not peddle the word of God for profit. On the contrary, in Christ we speak before God with sincerity, like men sent from God. (2 Cor 2:14-17)

In Roman times, a victorious Roman military leader would return from battle and the entire city would be filled with the aroma of crushed flowers. And there would be 2 lines in this triumphal procession — one consisting of the victorious Roman soldiers and the other one consisting of the prisoners of war from the defeated army.

Paul is making the argument that these Corinthian believers are beginning to smell like the Romans.

Brother Abraham said our suffering, our preferences and our complaints bring out our smell. The smell in us will come out eventually. He urged us to examine whether the aroma of Christ was permeating from our lives.