I'm not sure--I see vapor, but haven't had that with other brands, so pulled the burner before it could turn to cough cough smoke. I am using a soapstone burner, but I just ordered The Body Shop one that SolsticeScholar recommended above because if it works for one person, it will probably work for me, too. I suspect the soapstone dish I have from Yankee is just too thin above the flame, but I will let it vapor a bit before I pull it to see what happens.
I have a ceramic owl BBW burner I love love love, but I can't burn anything in it without genuine scary smoke. I'm scared to put a tealight in it with no oil, even, that sucker gets so hot! Absolutely terrible design.
Thank you so much for your help!