EVERY night, Sumo, 70, has a regular activity: lying down, looking at the ceiling, and enduring the pain which pierces his chest. He has an almost constant cough. "It feels like my chest can't take it anymore. Tight and painful," he said. His wrinkled hands grasp his protruding rib cage.

This is no ordinary coughing spell. Feelings of chest constriction and chest pain began after he inhaled smoke from the PT Petrowidada chemical fa