This is a not-uncommon question (and occurrence). I was over at the Amazon site the other day and found this: "Jan 24, 2008 11:45 AM PST After following manufacturers directions for the Bialetti pizza stone the fumes and smell were so bad while heating up I had to put the stone out side because the fumes were burning our eyes.I did follow the directions as stated ,I greased it with vegetable oil,could this have cause it and has any one of you ever experienced this problem?".
To which I replied:
"It's not uncommon for folks new to pizza stones to do this. I did it myself, thinking this would season the stone. Big mistake, same results. After over a year of using a stone I can tell you without reservation that this was completely unnecessary. The stone will darken and develop stains and a slightly smoother surface with use (and the inevitable spills that occur). Don't even concern yourself with it. Just use it and it'll break in all on its own. I scrape it clean with a bench scraper after it cools each time, followed by a quick wipe with a dry paper towel to remove the carbon dust which always occurs. That's all you need to do. "
To The Pontificator I'd say, just be patient. Don't wash it, don't spray it with *anything*! Do what I did (the next day, after I did some research to figure out what happened) - fire up the oven as high as possible, open all the windows and doors to get a cross draft, crack the oven a little when it reaches temp and go outside or to another part of the house. We don't even have an oven vent or fan and it took maybe 30 minutes to burn off all the oil I so mistakenly soaked into the stone. Since then it's been fine. I'm a more than a little curious to know how you spill oil on your stone so much that it's a problem. Other than the odd bit of cheese or slopped-over tomato, I've never had anything get on the stone that would cause smoking. Maybe you should look at your technique?