Modifiers matching constituent:

• noxious,
• lighter,
• chemical,
• organic,
• volatile,
• porous,
• architectural,
• medium,
• inert,
• heterocyclic,
• dietary,
• inorganic,
• natural,
• toxic,
• major,
• atmospheric,
• cellular,
• hazardous,
• biologic,
• anatomic,
• indigestible,
• expensive,
• salt,
• rare,
• regulated,
• dry,
• elementary,
• residual,
• powdered,
• dissolved,
• sensitive,
• single,
• heavy,
• valuable,
• costly,
• dispersive,
• basic,
• therapeutic,
• dermal,
• potential,
• fundamental,
• effective,
• extractable,
• magnetic,
• unexpected,
• desirable,
• atomic,
• compositional,
• individual,
• psychoactive,
• colloidal,
• labile,
• molecular,
• gaseous,
• aggregate,
• anatomical,
• fungal,
• physical,
• indispensable,
• propellant,
• electronegative,
• noncombustible,
• suspended,
• phrasal,
• mobile,
• dangerous,
• interfering,
• characteristic,
• essential,
• undesirable,
• deleterious,
• unusual,
• level,
• common,
• concrete,
• mental,
• primary,
• endogenous,
• urinary,
• minute,
• manufactured,
• unwanted,
• solid,
• digestible,
• larger,
• alternative,
• additional,
• extraneous,
• number,
• bacterial,
• animal,
• abundant,
• brittle,
• nutritious,
• symbolic,
• external,
• polar,
• radioactive,
• neutral,
• hydrophobic,
• biological,
• salivary,
• nuclear,
• elemental,
• physiological,
• environmental,
• linguistic,
• metabolic,
• biomedical,
• critical,
• protective,
• corrosive,
• polyatomic,
• light,
• nutritive,
• exotic,
• key,
• odorous,
• nonfat,
• reactive,
• conductive,
• soluble,
• active,
• earthy,
• biliary,
• main,
• conventional,
• harsh,
• antigenic,
• hard,
• useful,
• ionic,
• airborne,
• recoverable,
• functional,
• absorbent,
• typical,
• miscellaneous,
• liquid,
• significant,
• acidic,
• beneficial,
• anionic,
• heavier,
• fluid,
• important,
• syntactic,
• structural,
• grammatical,
• vital,
• plastic,
• intestinal,
• catalytic,
• alkaline,
• damaging,
• large,
• available,
• acid,
• insoluble,
• inexpensive,
• harmless,
• smaller,
• colored,
• logical,
• small,
• nutritional,
• nontoxic,
• hydrophilic,
• aromatic,
• explosive,
• crystalline,
• dense,
• benign,
• stable,
• biochemical,
• morphological,
• cereal,
• abstract,
• refractory,
• phonological,
• macromolecular,
• secondary,
• palatable,
• medicinal,
• intracellular,
• nonpolar,
• simple,
• incombustible,
• new,
• metal,
• minor,
• charged,
• skeletal,
• passive,
• harmful,
• noble,
• diverse,
• recyclable,
• bitter,
• base,
• metallic,

Simple categories matching airborne:

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