Comment by vasco

Linked from the article this seems interesting: https://ourworldindata.org/data-review-air-pollution-deaths

But from my understanding most deaths attributed to pollution, specially indoors, relate to fireplaces, cooking, oil lighting or other "I'm making smoke indoors" activities which will cause lung issues later on. Even having candles on all the time isn't good for you.

The rest as far as I understand is all estimated by putting a finger in the air and subdividing lung cancer deaths into what they feel like the causes were.