“A broken exhaust fan led to a carbon monoxide build-up Monday night in a Southwest Side underground parking garage, authorities reported.
Fire crews responded to the apartment building in the 90 block of Kessel Court on reports of carbon monoxide alarms sounding, Madison Fire Department spokesperson Cynthia Schuster said in a statement.”
https://madison.com/news/local/broken-exhaust-fan-leads-to-carbon-monoxide-build-up-in-southwest-side-underground-garage-authorities/article_01fad19f-8774-5f86-bef4-69eb8d6ca168.html