By applying deodorants, with thermal foggers, like the one shown above, can be very effective in treating odors caused by fire in a residence or business. When items burn, most give off odors. The same as if you fry fish in your house. The air is filled with the cooking odor. Also, think about how burning wood smells at a fire pit.
When SERVPRO of Lenoir, Duplin and Jones Counties cleans with thermal fogging machines, it uses heated oils that have been treated with ingredients to counteract with the odors. The odor counteractant transforms into a smoke that is heavily loaded with tiny odor killing particles. Because it is smoke, it will get into all of the same nooks and crannies the smoke from the fire went. There are specific cleaning treatments to match each specific fire source, whether it be wood, plastic, paint, etc. Special additives to attack each type of smoke is used in the thermal fogger.