The aim of this online course is to help learners aware of the atmospheric hazards present in the workplaces and how to protect workers from them. The course also trains candidates on how to select the right kind of respirator in a workplace, how to fix the respirator properly, how to clean the respirator and keep it disinfected and how to analyze the work atmosphere and take necessary action to protect the health of workers. During the training, the participants will also get an overview of the California general-industry respiratory protection standard.