Modifiers matching contaminant:

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

Simple categories matching harmless:

• ingredient,
• animal,
• powder,
• contaminant,
• substance,
• solid,
• thing,
• material,
• neighbor,
• being,
• creature,
• metal,
• task,
• pollutant,
• insect,
• bug,
• plant,
• chemical,
• item,
• snake,
• object,
• component,
• bird,
• preservative,
• gas,
• particle,
• disorder,
• spider,
• metabolite,
• rodent,
• antigen,
• foodstuff,
• activity,
• souvenir,
• salt,
• allergen,
• impurity,
• organism,
• residue,
• medication,
• stuff,
• agent,
• compound,
• matter,
• critter,
• carrier,
• food,
• prey,
• crime,
• liquid,
• preparation,
• constituent,
• sugar,
• fluid,
• drug,