Open the windows every once in a while,

why don't ya?
'airing out' was the term employed as I was growing up..
Yeah, got to thinking about this while doing woodstove chores and it's been an ongoing internal dialogue for a couple of weeks now.

There are many official places to read about firewood, fireplace and woodstove safety..All I might add is to follow the rules and use your common sense and, most importantly, pay attention. Paying attention, for me, is the sign of a truly evolved human. Sadly, I come up short too frequently in that category...Nevertheless: ONE MUST TRY!
Besides the obvious necessary cleanings of chimneys and hardware and such I feel of additional importance is the cleaning of the air your lungs require.

Now most people hereabout are concerned, rightly so, about the heat escaping as many of us live in houses aged enough to have a gap or two. (And don't even go near the conversation of HOW people in the not too distant future will stay warm..I shudder metaphorically and will perhaps literally someday).
But a bit of escaping heat is not all bad. To live hermetically sealed in with mega-insulation can create some hairy built up gases and such. Stale, unclean air. So open a damned window every once in a while!
Full Disclosure: This was typed while the temp was actually a hair above freezing for the first time in ages and the air completely still. However, the more arctic the windy blast through the house, the sooner you shut the window! Simple.