Deodorization is an important concept in the cleaning process that we use here at SERVPRO. It is common to use deodorization throughout the aftermath regarding smoke damage. There are two deodorization processes that we commonly use here at SERVPRO of St. George which is thermal fog and ozone. Thermal fogging is used in smoke damaged homes and hard to reach spaces. When oxygen, O2, passes through an ozone machine, some of the molecules are split resulting in free oxygen atoms. These free atoms combine back with intact O2 molecules resulting in O3, which is ozone. Give SERVPRO of St. George a call for any deodorization questions. "Like it never even happened"