The all clear is being given at the YMCA in Woonsocket after a chemical scare. A YMCA spokesperson says a strong chemical odor was first smelled on Tuesday afternoon and was thought to be a chlorine spill. Firefighters arrived in hazmat suits and set up decontamination tents. Hours later, fire crews determined there wasn't a chlorine spill and urged the recreational center to call its pool company. An investigation is ongoing.