Modifiers matching contaminant:

• colloidal,
• airborne,
• harmful,
• local,
• anionic,
• diverse,
• organic,
• biodegradable,
• radioactive,
• environmental,
• several,
• refractory,
• hydrophobic,
• inorganic,
• polymeric,
• persistent,
• structural,
• multiple,
• chemical,
• natural,
• regulated,
• fine,
• basic,
• fluid,
• accidental,
• common,
• unbound,
• solid,
• exogenous,
• elemental,
• major,
• carcinogenic,
• biological,
• viscous,
• deadly,
• radiological,
• ferromagnetic,
• dermal,
• ambient,
• reactive,
• mobile,
• physical,
• ic,
• ordinary,
• gross,
• out,
• unexpected,
• smaller,
• related,
• atmospheric,
• numerous,
• endogenous,
• minute,
• secondary,
• granular,
• model,
• miscellaneous,
• salt,
• world,
• noxious,
• clean,
• size,
• toxic,
• combustible,
• modern,
• molecular,
• experimental,
• unusual,
• harsh,
• surrounding,
• non-metallic,
• nonmetallic,
• microscopic,
• small,
• noninfectious,
• unique,
• biologic,
• stable,
• abrasive,
• first,
• hazardous,
• dry,
• fibrous,
• tough,
• interfering,
• agricultural,
• slippery,
• unseen,
• industrial,
• magnetic,
• concrete,
• individual,
• insoluble,
• larger,
• foreign,
• dangerous,
• floating,
• coarse,
• external,
• dietary,
• suspended,
• particulate,
• dissolved,
• mechanical,
• domestic,
• lighter,
• unpleasant,
• level,
• detrimental,
• incidental,
• dense,
• ferrous,
• unwanted,
• possible,
• corrosive,
• deleterious,
• irritating,
• outdoor,
• typical,
• new,
• separate,
• caustic,
• mental,
• poisonous,
• single,
• moving,
• undesired,
• animal,
• opaque,
• waterborne,
• heavy,
• large,
• minor,
• important,
• removable,
• loose,
• harmless,
• abundant,
• additional,
• sticky,
• oily,
• aqueous,
• undesirable,
• conventional,
• active,
• synthetic,
• urban,
• lightweight,
• meteorological,
• carbonaceous,
• microbial,
• acidic,
• polar,
• indoor,
• conservative,
• outside,
• noncombustible,
• energetic,
• traditional,
• hard,
• nonpolar,
• anthropogenic,
• volatile,
• charged,
• everyday,
• inedible,
• damaging,
• hydrophilic,
• liquid,
• off,
• residual,
• intracellular,
• cationic,
• lipophilic,
• nasty,
• unsightly,
• usual,
• potential,
• gaseous,
• over,
• semisolid,
• greasy,
• critical,
• excessive,
• soluble,
• unacceptable,
• heavier,
• metallic,
• visible,
• alkaline,
• familiar,
• key,
• soft,
• conductive,
• light,
• up,
• oleophilic,
• metal,
• finer,
• passive,
• invisible,
• stubborn,
• ionic,
• pure,
• extraneous,
• unhealthy,
• difficult,
• siliceous,

Simple categories matching airborne:

• organism,
• armament,
• contaminant,
• trauma,
• particle,
• pollution,
• sensor,
• debris,
• substance,
• disease,
• microorganism,
• aldehyde,
• thing,
• sound,
• chemical,
• illness,
• creature,
• pathogen,
• prey,
• virus,
• system,
• feeder,
• component,
• platform,
• predator,
• allergen,
• particulate,
• material,
• compound,
• pollutant,
• impurity,
• bug,
• germ,
• seed,
• waste,
• infection,
• craft,
• conveyance,
• condition,
• pest,
• medium,
• constituent,
• toy,
• dust,
• contagion,
• image,
• contamination,
• gas,
• pm,
• vehicle,
• agent,
• object,
• item,
• matter,
• insect,
• event,
• fiber,
• abrasive,
• vessel,
• metal,
• hydrocarbon,
• unit,
• hazard,
• aerosol,
• bacteria,
• animal,
• device,