Modifiers matching pollutant:

• airborne,
• everyday,
• hydrophobic,
• organic,
• tiny,
• harmful,
• lipophilic,
• microscopic,
• particulate,
• typical,
• outdoor,
• gross,
• chemical,
• irritating,
• industrial,
• smaller,
• important,
• common,
• size,
• unwanted,
• conventional,
• solid,
• specified,
• soluble,
• up,
• environmental,
• separate,
• anthropogenic,
• urban,
• estrogenic,
• out,
• atmospheric,
• nutrient,
• gaseous,
• toxic,
• occupational,
• indoor,
• large,
• additional,
• real,
• harmless,
• outside,
• persistent,
• home,
• damaging,
• insoluble,
• visible,
• clean,
• dangerous,
• primary,
• external,
• wet,
• dissolved,
• sized,
• old,
• liquid,
• hazardous,
• major,
• coarse,
• agricultural,
• floating,
• undesirable,
• inert,
• biodegradable,
• potential,
• powdery,
• natural,
• fine,
• regulated,
• possible,

Simple categories matching harmless:

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