DENVER - Two people have been hospitalized for carbon monoxide poisoning.
Emergency personnel were called to a home on High Street near Alameda Avenue in Denver at 5:21 a.m. on Friday.
They found two people complaining of headaches and nausea.
Inside the home, Denver Fire found carbon monoxide levels of 150 ppm (parts per million).
Some experts say carbon monoxide becomes toxic when it reaches a level higher than 35 ppm with continuous exposure over an eight hour period.