So, the smoke was from the oil on the stone going past its smoke point? (no pun intended). If so, any oil on the stone will eventually burn off, but it will set off your smoke alarms. Other than actually washing the stone or replacing it, I don't see how to get the oil off of it. A good quality air purifier next to the stove could also help keep that under control. I have had to bring mine in the kitchen before, and it worked really well. IF you do decide to wash it, I would recommend making sure it is 100% dry before using it again. And never put a hot stone in water, or water on it.