All in Burnt Offerings

Are there sins in our lives that the Lord must remove by fire? Do we hold on so tightly to them, or have they become so deeply rooted, that the only way to remove them is to burn them out? I think of a couple examples today of purification by fire. The first is Isaiah who spoke unclean Things among a people who commonly did the same. When he came into the presence of God he realized he was sinful and the smell of smoke caused him great fear... because he felt as though God might destroy him for his transgression... Do we have sins that cause us to feel this way too?