children walking in a dusty polluted city

pollution air dust city protection child smog protective health medical people environment street dirty toxic protect danger smoke gas environmental walking woman children person factory polluted girl virus plant industrial family sick illness problem flat industry waste aid water dusty power flu care infection urban harmful safety disease ill suffocate smoking epidemic influenza medicine daughter young kid school fog pandemic walk healthy prevention sickness chemical emission pollutant ecology breathing factories cough outdoor asthma bad cityscape unhealthy pedestrian hygienic foggy