Trash fires pollute the air with the harmful chemicals released through the smoke and ash. Trash containing plastics, polystyrene (such as foam cups), CCA pressure-treated wood and bleached or colored papers can produce harmful chemicals when burned. For example, when CCA pressure-treated wood (which contains arsenic) is burned, arsenic can be released in the smoke or remain in the ash.  The smoke from the fire can deposit chemicals on garden vegetables and garden soil. People can be exposed to those chemicals by eating fruits and vegetables grown near the trash-fire or in garden soil tilled with the ashes.  Help control air pollution by utilizing curbside trash collection.