As the summer cookout season heats up, here’s a cautionary tale about a potential danger of cleaning your grill. On a warm June evening in Springfield, the Keuchlers – Candi, William and 5-year-old daughter Neela – were enjoying a chicken wing dinner fresh from the family grill when Neela’s eyes suddenly widened in alarm. “I can’t swallow,” she said. She wasn’t choking, but hives began to break out on the child’s neck. A quick flashlight inspection of Neela’s mouth revealed the culprit. A wire bristle had lodged horizontally in her throat. It had come off the grill-cleaning brush and adhered