It would be nice if this does not turn into a "Why I Hate California" thread. There are almost certainly hundreds dead from the northern fires, and it seems a bit inappropriate.
Some of my notes:
The particle masks that you see most wear of course will do little unless you are getting ash. I respirator is likely the only effective means to kill the smoke and smell. If you have central air/heat, make sure the filter is good and turn it on (to fan if it's not hot or cold).
Once the smoke is gone, you will need to deal with that ash (if you are getting that), it gets EVERYWHERE. I am still finding it years after the fire that ran through the hill north of Simi Valley ashed us a few years ago. Lots of vacuuming and cleaning are obviously what will be needed.
The more insidious problem is the smell. One of the southern fires literally went through where I work. No building damage, but it sat in the smoke for days. They cleaned all the carpets, all the fabric, changed the filters, and have been supplementary filters in the building for days... it still smells... not horrible, but I am suspicious some plant that burned make for a rather pungent smell (I could smell it strong in an area I walk by). Perhaps a counter smell (incense etc) might be in order.
A note on the fire behavior. You would think total devastation in LA based on the pictures (they always show the worst of course), but you would be surprised how much survived in some of the fire areas. The norther fire was of a bit different sort of course. That was basically a wall of fire running through a wooded area.
In developed areas, the fire essential burns the open fields and can be kept away from housing developments. The exception of course are the houses downwind that get unlucky with the flying embers. The houses in the canyons and the hills are a different story of course, those are more subjected to the wall of flames. Malibu got nailed (in my guess) mostly because it's basically at the deadly end of a bunch of "fire shotgun" canyons and trying to defend those houses would have taken a LOT more effort than defending many more homes in the developments. The difficulty of getting to some of those homes also adds to that.
It's not a great shot of what I am talking about, but below is a picture of where Woolsey crossed the 101. As you can see, the commercial buildings (generally not that flammable) are essentially untouched. This is because, as noted, the fire mostly travels by way of embers blown downwind. It gets into the fields, and the firefighter create fire lines to keep it from the homes bordering them (there are a bunch of houses, including Justin Beabers above that hill to the center left)