Traditionally there have only been two ways to eliminate smoke, soot and mold contamination to irregular or porous surfaces. (interior support structures, exterior walls, etc.): Demolition or the use of a pigmented sealant. Sealants are cheap but risky. Demolition is expensive and time consuming. Now there is a safe and effective solution for irregular surfaces. Soda Blasting!
This method entails using a high-pressure compressed-air spray using a baking soda abrasive. Environmentally safer than solvents and caustic chemicals, and combined with the appropriate odor abatement very successful.