Earlier quoted context omitted.
The stink remains even for efficient fires. Smoke is often correlated of course. I'm in Christchurch, New Zealand which gets winter smog,. The city council enforces rules and woodburners need to meet strict emission standards. They regularly tighten the rules so that if you want a woodburner you need to replace it every 15 years or so. But they do still smell. The rules have radically improved the air quality here an…
>They regularly tighten the rules so that if you want a woodburner you need to replace it every 15 years or so. What's that supposed to achieve? Also what do you do if you build your own woodburner/fireplace?
I suspect part of the rule tightening is to slowly squeeze to get rid of fires altogether (the outcome with the cleanest air).
> what do you do if you build your own woodburner/fireplace?
You couldn't afford to do it legally (I expect emissions testing is expensive). I don't know what the penalties are for illegal woodburners/fireplaces. My personal experience is that it isn't enforced. I'd guess penalties can be avoided unless you're a repeat offender with a complaining neighbour.
Note that outdoor braziers are legal AFAIK. Although Outdoor fires have some restrictions - especially if very dry and high fire risk.
Firewood is not cheap for heating. Even if you have free trees then it costs a lot of time (in my experience) and often equipment or transport is expensive too.
Here's some historical data that shows very significant improvement over 25 years: https://www.ecan.govt.nz/your-region/your-environment/air-qu...
The smog was horrific before 2000 when those statistics start. Apparently low air quality was implicated in many deaths per year here.