North Carolina –
“The county said in a letter sent to employees that two employees ‘became ill and were transported to the hospital’…Other employees told WRAL Investigates they and their coworkers have been suffering for weeks, if not months, from nausea, headaches, fatigue and even fainting in the office. They learned in mid-January of the possible elevated level of carbon monoxide in their workplace, and believe that may be to blame. They fear the issue may have started months prior.”

State investigating after complaints of elevated carbon monoxide in Durham County Human Services building (wral.com)