Southern Vancouver Island here.
HEPA filter inside the house: makes all the difference. Even though out house is older and not completely air tight, the filter has kept the air clear and breathable. Going outside, the smoke immediately burns the lungs and throat. Staying indoors when I can.
Outside, I have been wearing my N95 mask. I wear it when I am indoors with others or in crowded outdoor spaces (covid's unfortunately still a thing). But when it's pollen season or wildfire season, I wear it when I am walking to work, working in the garden, etc. It makes such a huge difference. One of the very small benefits of the pandemic I suppose has been discovering N95 and K95 masks — they are great!