I have used this smoker indoors several times and I seriously love it.  My husband has an outdoor one but I won't use it. It intimidates me and it's cold or rainy most of the time. This does smoke some but nothing major.  I open3d my back door and it was fine. I never had a smoke detector go off either so it wasn't much smoke at all. I love how easy it is to use. Also the food comes out delicious. I love the temperature gauge so you don't have to keep checking it and can keep an eye on it On the app or the outside reading on the smoker.  This will be used tons in the future