Atmospheric sanitation is a broad treatment description sometimes used for efforts to reduce contaminants in air. It is not a complete specification for a restoration service.
What this means at your property
An estimate using this phrase should identify the actual equipment or process, the substance being addressed and whether occupied areas are involved. Filtration, ventilation and surface cleaning perform different jobs and should be described separately.
What evidence should accompany the proposed treatment?
Ask what problem was observed, why the method is appropriate and how its outcome will be evaluated. A fresh smell does not establish air quality or confirm that a moisture or residue source has been removed.