Kentucky –
“More than 100 calls about possible carbon monoxide exposure occurred shortly before Christmas 2022 in New Albany, Clarksville and Jeffersonville, WDRB News has previously reported. At least four people were taken to the hospital.
State regulators claimed CenterPoint failed to follow federal regulations when it improperly heated propane at its Jeffersonville facility, resulting in too much propane in the gas distribution system. The investigation found that the company didn’t have controls in place to prevent a mixture that ‘could cause improper combustion in consumer appliances.’”

Indiana gas company pays $125k fine over pipeline violations in carbon monoxide scare | In-depth | wdrb.com