The Guardian is going really big on this (although we all know they have a track record of ignoring other vital concerns) & other news outlets have been reporting on this for a while. It does seem obvious that burning fuel inside a house is, in fact, very bad for you. I have a four-year-old & we've had a woodburner for 5 years, since we bought this (draughty, Victorian) house. Used a fair bit to cut down on energy bills. Two - four times a week in coldest winter; sometimes all day on weekends etc. I try not to open it loads but DP won't bloody listen; he's got that man-disease of constantly tending/fiddling with the fire for no fucking purpose whatsoever.