Modifiers matching pollution:

• particulate,
• marine,
• ambient,
• environmental,
• airborne,
• up,
• local,
• adverse,
• urban,
• industrial,
• atmospheric,
• hazardous,
• significant,
• solid,

Simple categories matching adverse:

• pollution,
• event,
• behaviour,
• effect,
• condition,
• consequence,
• action,
• news,
• agent,
• weather,
• illness,
• reaction,
• behavior,
• experience,
• movement,
• phenomenon,
• circumstances,
• pressure,
• stimulus,
• activity,
• emotion,
• elements,
• occurrence,
• structure,
• property,
• state,
• symptom,
• incident,
• influence,
• outcome,
• contingency,
• situation,
• impact,
• shock,
• measure,
• change,
• information,
• temperament,