Shh! I live alone and the "Kerr's of the drinking class" mug makes for a nice steam milk first and then pull the shot Latte. Yes, the Behmore is used indoors and does not trip my smoke detector. I put it at the back of my stove under the exhaust hood. There is a definite after smell for a few hours! It would be much less if I were to leave the hood running as I clean the machine. A Hearthware or popcorn popper roaster always alerted me to second crack when the Smoke alarm went off.
~Richard
Coffee is a nice hobby because there are so many possibilities.