You detect that a store is emitting excessive amounts of CO, you should?

• A. Shut off gas supply immediately
• B. Clean the burner in the stove and/or call for it to be serviced
• C. Open windows and continue business
• D. Ignore it

Answer: (B)

When you detect excessive CO from a store’s appliance, the priority is to address the source of the problem and restore safe operation. Excess CO often comes from incomplete combustion, which can be caused by buildup or tuning issues in the burner. Cleaning the burner removes clogs and buildup that disrupt proper air flow, helping the flame burn more completely and reduce CO production. If cleaning improves operation, the system can continue to be used after confirming it’s functioning correctly. If problems persist, a professional should service and inspect the appliance to fix any faults, adjust the fuel-to-air ratio, and verify proper venting.

Opening windows and continuing business won’t eliminate the underlying issue and can give a false sense of safety. Ignoring it is dangerous. Shutting off the gas supply immediately is a prudent safety action in an urgent emergency, but the question focuses on a proactive corrective step to resolve the issue, which is cleaning the burner and/or having the equipment serviced.