Yeah it's weird. We have been using it for a year and it is only recently that we have had the smell when the oven is on or when a burner is on, same smell. Never smell it when everything is off. Maybe we will have to have Jennair come out a take a look (smell). It is a very chemically smell, not like burnt food or anything. I am also wondering if it only happens when the wind is blowing a certain direction, i.e. backing up the downdraft exhaust?
we have not done that, it has not been used that much and it appears quite clean.