Emergency crews responded Friday morning to a carbon monoxide scare at a business near NE Underground Drive and Missouri 210 Highway in Kansas City, Missouri, after reports of an unconscious person. The Kansas City Fire Department said the call came in around 8:30 a.m. and prompted an immediate response from firefighters and other emergency personnel.
When crews arrived, they evacuated the business as a safety precaution and began checking air quality inside the area. Authorities later determined that elevated carbon monoxide levels were the cause of the incident. Carbon monoxide is a colorless, odorless gas that can be dangerous or deadly when it builds up in enclosed spaces, making rapid detection and evacuation critical in emergencies like this.
Nearly two dozen people were treated at the scene after exposure concerns, according to officials. Four of those individuals were transported to hospitals for additional evaluation and care. Officials did not immediately release details about their conditions, but the large number of people needing treatment indicated the seriousness of the situation.
Firefighters remained on site for several hours while they continued to monitor conditions and ensure the area was safe. The response included air-quality checks throughout the affected space, which is located in a cave setting. Crews worked to confirm that carbon monoxide levels had returned to safe limits before allowing anyone back inside.
The scene was cleared shortly before 11 a.m., and workers were permitted to return to the business after the all-clear was given. No additional injuries were immediately reported. Authorities did not say what caused the carbon monoxide to accumulate or whether equipment failure, ventilation issues, or another source was to blame.
The incident underscores the risks posed by carbon monoxide in enclosed or underground environments, where the gas can build up quickly and without warning. Symptoms of exposure can include headache, dizziness, nausea, weakness, confusion, and loss of consciousness. In severe cases, exposure can become life-threatening.
Emergency officials did not announce any ongoing hazard after the scene was secured, and normal operations were able to resume later in the morning. The Kansas City Fire Department’s response helped prevent what could have become a more serious event, and investigators may continue to review the source of the carbon monoxide release.
For businesses and workers in enclosed spaces, the episode serves as a reminder of the importance of working carbon monoxide detection systems, proper ventilation, and rapid evacuation procedures. The fast response Friday morning ensured that exposed individuals received prompt treatment and that the affected area was carefully checked before reopening.
