Brookfield Volunteer Fire Company is asking that residents make sure chimneys are cleaned and checked before burning this season. With the cold setting in, fire officials say preventative measures can reduce the possibility of a fire in the chimney/flue and CO entering your residence.  They say the best ways to prevent a chimney fire include only burning seasoned or dried out wood, which will sound hollow when hit against another piece of wood, never burning cardboard boxes, wrapping paper, or the Christmas tree, and only starting fires with dry kindling.  Gasoline or kerosene should never be used.