Now what does this have to do with appliances? Well, some appliances filter the same air you breath - mostly air conditioners, but your refrigerator and dryer circulate air also. There isn't much you can do for the refrigerator or dryer, but if the smoke is heavy in your area, check your filters frequently. Even if you can't see indiviual ashes, they are there and can clog your filters pretty fast. If you have someone in the house with allergies, asthma or other breathing difficulties, making sure these filters stay clean is imperative.
Have a great week!