Glendale, WI –

“North Shore Fire says four people were treated on scene with two rushed to the hospital…’I’m not sure how long each of those employees was here but obviously progressing over the entire shift, being exposed to those levels could be fatal,’ Capt. Dan Tyk said….Firefighters said the highest levels of carbon monoxide were measured at 500 parts per million. Investigators said the oven hood wasn’t venting properly. ”

https://www.wisn.com/article/boston-market-in-glendale-evacuated-for-elevated-levels-of-carbon-monoxide/29060577#