Methods, apparatuses, and systems for calibrating gas detecting apparatuses

A calibration apparatus configured to generate a testing gaseous substance, the calibration apparatus comprising:

• a gas flow channel comprising at least one gas inlet configured to convey a background gaseous substance within at least a portion of the calibration apparatus;
• at least one valve configured to provide the testing gaseous substance to a gas detecting apparatus operatively connected to the calibration apparatus;
• a nebulizing element configured to generate the testing gaseous substance by transforming a testing solution in conjunction with the background gaseous substance;
• a pressure control element configured to maintain a constant air pressure within the at least a portion of the calibration apparatus;
• and
• a controller component in electronic communication with the nebulizing element and the pressure control element, wherein the controller component is configured to:
• in response to determining that the testing gaseous substance satisfies one or more target parameters, transmit a control indication to actuate the at least one valve in order to cause at least a portion of the testing gaseous substance to enter the gas detecting apparatus.