Air quality can be an issue for asthmatics in valleys when there is atmospheric inversion (common in winter). Indoors, smoke rarely enters the home if you're us

Air quality can be an issue for asthmatics in valleys when there is atmospheric inversion (common in winter). Indoors, smoke rarely enters the home if you're using a modern stove and lighting in correctly. Modern wood stoves are dramatically more efficient than the typical fireplace you'd remember from youth. If anything, the issue would be high radiant heating on indoor surfaces causing evaporation and out-gassing. I have heard people complain about this, but it would generally be more of a freshly-installed or newly-built issue. Or perhaps if the home in question is built for passive heating, meaning that it's practically hermetically sealed and hence would require active ventilation.