According to firefighters, first responders were called to Pete’s Gourmet Confections on the 3000 block of Merriman Road around 5:00 Wednesday night.
According to the fire chief, of the eight people affected, four were taken to the hospital but it doesn’t seem serious.
Emergency crews remained on scene pushing air into the building in an effort to remove the carbon monoxide.
The cause of the leak has not been confirmed but Avista Electric Utilities says it was not due to any natural gas appliances.
NBC5 News will continue to provide updates to this story as they become available.