A fire at a hotel's swimming pool sent large plumes of black smoke above the Las Vegas Strip but left most guests unscathed today. It took firefighters about 30 minutes to gain control of the blaze on the 14th floor of The Cosmopolitan of Las Vegas hotel, said Clark County Fire Chief Greg Cassell. One person was taken to a hospital with smoke inhalation, and a second was treated at the scene. Nobody suffered any burns from the flames that ignited outside on the pool deck. Investigators are interviewing guests and going through cellphone videos to try to determine the cause. (More Las Vegas stories.)