Edit
Looks like you can get a hepa filter for £70 that will fix the issue for the most part.
https://www.amazon.co.uk/dp/B08G8JHGWH/ref=cm_sw_r_wa_apa_fa...
And gas stoves (and so presumably fires?) are also a problem.
https://www.theguardian.com/environment/2020/may/05/gas-stov...
Thank god we mastered central heating decades back...
True though that may be, I think the main issue is the spoiling of the commons: the air we breathe. I love my indoor air filters, but I sure do like fresh outdoor air as well.
With regards to the gas stoves: it's mostly an issue of indoor air pollution which is certainly valid (a lot of particulate matter is created when cooking anything with heat). Even a properly sealed / ventilated wood stove is creating a lot more pollution than an equivalent gas one.
Now if we could only heat our house by mining bitcoin we'd all be better off. /s
https://www.dnaindia.com/lifestyle/report-every-breath-you-t...
That's not a fix.