WHO includes smoke in their overview page on air pollution as does Wikipedia.

- https://www.who.int/health-topics/air-pollution

- https://en.wikipedia.org/wiki/Air_pollution#Sources

As climate change was a key driver of these fires and those in Australia earlier this year, then I feel like it's perfectly reasonable to say this is man made pollution.

Coal and oil are also a "natural" fuels, but we burn those too and we say it's man made pollution.