Aurora, Colorado –
“Firefighters said just after 5 p.m., they got multiple calls about people feeling sick at the resort and conference center near Denver International Airport.”
“Fire officials later said the seven people were employees and “cooking equipment” caused the issue.”
No mention of CO detection/alarms onsite
Carbon monoxide leak sickens 7 at Gaylord Rockies Resort | FOX31 Denver (kdvr.com)
“Over one week in 2019, two people went to the hospital after they were exposed to carbon monoxide at the resort, the Denver Post reported. That leak came from work being done in the boiler room, the outlet reported.”
https://www.sacbee.com/news/nation-world/national/article270290182.html