I have a smoke detector and a CO detector and neither one has gone off beca= use of the heater. The Big Buddy is pretty well designed and is intended fo= r use in outbuildings, ice fishing shacks, etc. I know that CO has no odor,= but I'm bothered more by my oven than this heater, so I'm not worried, esp= ecially in a garage. Bob ________________________________________ From: piclist-bounces@mit.edu on behalf of Van Ho= rn, David Sent: Monday, November 27, 2017 9:20 AM To: Microcontroller discussion list - Public. Subject: RE: [OT] Best garage heating option CO is not something you can smell, you just have a few symptoms then drop. --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .