MASINT collection of fallout is most commonly done with airborne dust traps, either on manned aircraft or drones.
These typically have dust traps or grids, but not mesh over them ( I don't know why ).
Although the causes of asthma are the subject of much speculation and research, it's best to keep carpeting and other dust traps to a minimum.
For example, Halon 1301 total flooding systems are typically used at concentrations no higher than 7 % by volume in air, and can suppress many fires at 2.9 % v / v . By contrast, carbon dioxide fire suppression flood systems operate from 34 % concentration by volume ( surface-only combustion of liquid fuels ) up to 75 % ( dust traps ).