A refrigerator includes a refrigerating cycle unit for refrigerating an atmosphere in the refrigerator by means of heat absorption due to change of a flammable refrigerant from a liquid phase to a gaseous phase, and a deodorizer having first and second electrodes discharging electricity upon application of high voltage to them, producing ozone, a burning chamber provided so as to surround the first and second electrodes, and a fire-spread preventing unit provided in the burning chamber to prevent burning of the flammable refrigerant in the burning chamber from spreading outside the burning chamber.