I recently started smelling smoke from the pellet stove even though I keep it nice and clean. The wife tries to help by adding pellets which is nice. I come home from work one day and the stove is tweaked. I am kind of anal so when I installed the stove I lined everything up perfectly. My problem is that the stove is sitting on marble and the marble allows the stove to move if you push on the side. So I am guessing that the wife moved the stove while adding the pellets breaking the seal in the pipe somewhere. I am cranky and don't feel like screwing with it anymore this year so it is shut down. When I am in a better mood I will completely disassemble and do a thorough cleaning. Oil is only $1.56 per gallon, that is pretty cheap so that is what I will be heating with for the rest of the year even though I have enough pellets for the next heating season.