I actually bought an air purifier when the pandemic started, it helps with dust and other particles but alas, it doesn’t have a lot to offer with smoke pollution. I’ve lived in this place for a long time but it’s never been as bad for smoke pollution like it is now, so many changes and not always for the better. I’m going to look into what you mentioned earlier, I’m not sure if it’s the same in Canada, I’ve never heard of it but no harm in checking it out, thanks.