H2 sensor

I want to order H2 sensor. I am interested in Factory Calibrated Electrochemical Hydrogen Sensor (0–1000 ppm, I2C&UART) product. In my experimental study, there are several reactions. In the final reaction, H2  occurs. But if the reaction can not be completed with a 100% conversion ratio, some other gases like HCL, Cl2, and O2 can occur. My question is: If there are different gases in the gas collection vessel where the H2 gas sensor is integrated, will this affect the results for the H2 measurement of the sensor? 
 

Product link is https://www.dfrobot.com/product-2517.html