A sprayer comprising a container, a propellant composition containing 1-chloro-2,3,3,3-tetrafluoropropene contained in the interior of the container, and a spray unit to spray the propellant composition to the outside of the container, wherein the propellant composition further contains a hydrofluoroolefin, wherein the hydrofluoroolefin contains at least one member selected from 2,3,3,3-tetrafluoropropene and 1,3,3,3-tetrafluoropropene, and wherein the propellant composition to be sprayed satisfies the following requirements and throughout the entire period over which the sprayer is used: in the following combustion test, the propellant composition to be sprayed is evaluated to "have no combustibility": in combustion test carried out with respect to a mixture of a specimen and air in a container controlled at 60°C ± 3°C under 101.3 kPa ± 0.7 kPa in facilities as specified in ASTM E-681-09, when the mixture has no combustibility in the entire range of a proportion of the specimen to the total volume of the mixture being higher than 0 vol% and up to 100 vol%, such a specimen is evaluated to "have no combustibility"; in the combustion test, in a gaseous phase in the vicinity of the center of the container, a fire is made by discharge ignition under 15 kV at 30 mA for 0.4 second, spread of flame is visually confirmed, and when the angle of spread of the flame upward is less than 90 degrees, such a specimen is evaluated to have no combustibility; the global warming potential (100 years) in accordance with Intergovernmental Panel on Climate Change (lPCC), Fifth assessment report, is less than 10. wherein the propellant composition further contains a hydrofluoroolefin, wherein the hydrofluoroolefin contains at least one member selected from 2,3,3,3-tetrafluoropropene and 1,3,3,3-tetrafluoropropene, and wherein the propellant composition to be sprayed satisfies the following requirements and throughout the entire period over which the sprayer is used: in the following combustion test, the propellant composition to be sprayed is evaluated to "have no combustibility": in combustion test carried out with respect to a mixture of a specimen and air in a container controlled at 60°C ± 3°C under 101.3 kPa ± 0.7 kPa in facilities as specified in ASTM E-681-09, when the mixture has no combustibility in the entire range of a proportion of the specimen to the total volume of the mixture being higher than 0 vol% and up to 100 vol%, such a specimen is evaluated to "have no combustibility"; in the combustion test, in a gaseous phase in the vicinity of the center of the container, a fire is made by discharge ignition under 15 kV at 30 mA for 0.4 second, spread of flame is visually confirmed, and when the angle of spread of the flame upward is less than 90 degrees, such a specimen is evaluated to have no combustibility; the global warming potential (100 years) in accordance with Intergovernmental Panel on Climate Change (lPCC), Fifth assessment report, is less than 10. in the following combustion test, the propellant composition to be sprayed is evaluated to "have no combustibility": in combustion test carried out with respect to a mixture of a specimen and air in a container controlled at 60°C ± 3°C under 101.3 kPa ± 0.7 kPa in facilities as specified in ASTM E-681-09, when the mixture has no combustibility in the entire range of a proportion of the specimen to the total volume of the mixture being higher than 0 vol% and up to 100 vol%, such a specimen is evaluated to "have no combustibility"; in the combustion test, in a gaseous phase in the vicinity of the center of the container, a fire is made by discharge ignition under 15 kV at 30 mA for 0.4 second, spread of flame is visually confirmed, and when the angle of spread of the flame upward is less than 90 degrees, such a specimen is evaluated to have no combustibility; the global warming potential (100 years) in accordance with Intergovernmental Panel on Climate Change (lPCC), Fifth assessment report, is less than 10.