For those with a Model S/X, the bioweapon defense mode works great cleaning the air in your cars with its massive HEPA air filter. We drove through a smoky area on a road trip to southern Calif two years ago with ash falling and know that it's very effective. We were not able to detect smoke at all inside the car with it on, only upon opening the car door. The Model 3 doesn't offer quite the same level due to the smaller filter size possible in the car, although Tesla says its way better than other typical car filters. Last year when the Paradise Fire's smoke had reached our area and the sky was colored with it and the odor was very detectable, I kept my Model 3's air on recirc and fan on high but could detect a slight smoky odor. And we were some 200 miles away from the source. If you're interested there's a thread somewhere on TMC about the Model 3's filtration during this fire and people measuring the air quality inside the cabin.
In any event before it's needed, if you live or travel through an area that could be subjected to wildfire, now would be the time to stock a few N95 face masks in your car's emergency kit. Even if you have an S or X you might find you need to leave the car and you or your kids really don't want to be breathing the fire particles in. Also don't want to wait until there's a run on the masks like there was last year. PSA over.
In any event before it's needed, if you live or travel through an area that could be subjected to wildfire, now would be the time to stock a few N95 face masks in your car's emergency kit. Even if you have an S or X you might find you need to leave the car and you or your kids really don't want to be breathing the fire particles in. Also don't want to wait until there's a run on the masks like there was last year. PSA over.