A gas detection system, comprising: a master controller device, and two or more slave sensor devices configured to be communicatively connected to the master controller device, wherein the two or more slave sensor devices are configured to be combined with the master controller device and to be detached to be disseminated at one or more locations; wherein each of the two or more slave sensor devices includes a gas sensor and wherein the two or more slave sensor devices are configured to: respectively detect one or more types of gases to generate detection results, convert the detection results into detection signals, transmit the detection signals to the master controller device, and wherein the master controller device is configured to: receive the detection signals, generate a detection report based on the detection signals, and transmit the detection report to one or more external devices, characterized in that each of the two or more slave sensor devices includes: an air inlet and an air outlet that define an air path, and one or more air locks configured to seal the air path in a condition when the two or more slave sensor devices are connected physically to each other. a master controller device, and two or more slave sensor devices configured to be communicatively connected to the master controller device, wherein the two or more slave sensor devices are configured to be combined with the master controller device and to be detached to be disseminated at one or more locations; wherein each of the two or more slave sensor devices includes a gas sensor and wherein the two or more slave sensor devices are configured to: respectively detect one or more types of gases to generate detection results, convert the detection results into detection signals, transmit the detection signals to the master controller device, and wherein the master controller device is configured to: receive the detection signals, generate a detection report based on the detection signals, and transmit the detection report to one or more external devices, characterized in that each of the two or more slave sensor devices includes: an air inlet and an air outlet that define an air path, and one or more air locks configured to seal the air path in a condition when the two or more slave sensor devices are connected physically to each other. wherein the two or more slave sensor devices are configured to be combined with the master controller device and to be detached to be disseminated at one or more locations; wherein each of the two or more slave sensor devices includes a gas sensor and wherein the two or more slave sensor devices are configured to: respectively detect one or more types of gases to generate detection results, convert the detection results into detection signals, transmit the detection signals to the master controller device, and respectively detect one or more types of gases to generate detection results, convert the detection results into detection signals, transmit the detection signals to the master controller device, and wherein the master controller device is configured to: receive the detection signals, generate a detection report based on the detection signals, and transmit the detection report to one or more external devices, receive the detection signals, generate a detection report based on the detection signals, and transmit the detection report to one or more external devices, an air inlet and an air outlet that define an air path, and one or more air locks configured to seal the air path in a condition when the two or more slave sensor devices are connected physically to each other.