A refillable spray dispenser (2000, 3000, 4000) comprising: a spray assembly; a hollow injection rod (2300, 3300, 4300) comprising a rod fill hole and a rod injection hole; and a bottle having: a compartment in fluid communication with the spray assembly; and a bottom portion within which the hollow injection rod is positioned, the bottom portion comprising: bottom portion walls; a first seal (2402, 3402, 4402) and a second seal (2404, 3404, 4404); a bottom opening, a portion injection hole and a portion exhaust hole in the bottom portion walls, and a passage extending from the portion exhaust hole (2126, 3126, 4126) to the bottom opening; wherein the first seal (2402, 3402, 4402) seals the passage, preventing communication of fluid from the compartment to the bottom opening, and the second seal (2404, 3404, 4404) seals the rod injection hole, preventing communication of fluid from the rod fill hole to the compartment, when the hollow injection rod (2300, 3300, 4300) is at a resting position, and wherein the first seal allows communication of gas from the compartment, via the portion exhaust hole (2126, 3126, 4126) and the passage to the bottom opening, and the second seal allows communication of liquid from the rod fill hole, via the rod injection hole, to the compartment when the hollow injection rod (2300, 3300, 4300) is in an extended position, characterized in that the first seal (2402, 3402, 4402) is being fixed to the bottom portion walls and seals the passage when the hollow injection (2300, 3300, 4300) rod is in the resting position, and a groove or protuberance (2306, 3306, 4308) provided on the hollow injection rod (2300, 3300, 4300) allows said gas to bypass said first seal (2402, 3402, 4402) when the hollow injection rod (2300, 3300, 4300) is in the extended position. a spray assembly; a hollow injection rod (2300, 3300, 4300) comprising a rod fill hole and a rod injection hole; and a bottle having: a compartment in fluid communication with the spray assembly; and a bottom portion within which the hollow injection rod is positioned, the bottom portion comprising: bottom portion walls; a first seal (2402, 3402, 4402) and a second seal (2404, 3404, 4404); a bottom opening, a portion injection hole and a portion exhaust hole in the bottom portion walls, and a passage extending from the portion exhaust hole (2126, 3126, 4126) to the bottom opening; a compartment in fluid communication with the spray assembly; and a bottom portion within which the hollow injection rod is positioned, the bottom portion comprising: bottom portion walls; a first seal (2402, 3402, 4402) and a second seal (2404, 3404, 4404); a bottom opening, a portion injection hole and a portion exhaust hole in the bottom portion walls, and a passage extending from the portion exhaust hole (2126, 3126, 4126) to the bottom opening; wherein the first seal (2402, 3402, 4402) seals the passage, preventing communication of fluid from the compartment to the bottom opening, and the second seal (2404, 3404, 4404) seals the rod injection hole, preventing communication of fluid from the rod fill hole to the compartment, when the hollow injection rod (2300, 3300, 4300) is at a resting position, and wherein the first seal allows communication of gas from the compartment, via the portion exhaust hole (2126, 3126, 4126) and the passage to the bottom opening, and the second seal allows communication of liquid from the rod fill hole, via the rod injection hole, to the compartment when the hollow injection rod (2300, 3300, 4300) is in an extended position, characterized in that the first seal (2402, 3402, 4402) is being fixed to the bottom portion walls and seals the passage when the hollow injection (2300, 3300, 4300) rod is in the resting position, and a groove or protuberance (2306, 3306, 4308) provided on the hollow injection rod (2300, 3300, 4300) allows said gas to bypass said first seal (2402, 3402, 4402) when the hollow injection rod (2300, 3300, 4300) is in the extended position.