BOISE — The best advice is, of course, to stay inside during these smoky times, but can we trust that the air filters in our homes are keeping all that junk in the air out there from getting in?

For an answer we talked to a local HVAC specialist.

Western Heating and Air Conditioning in Boise says in times like these you should be keeping a closer eye on your furnace air filter.

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"When the air is bad like this, I recommend even with the best ones, checking them monthly, and seeing, when you start to see some discoloration get it out and get a new one in," Western Heating and Air's Kevin Abbott said. "A filter is a lot cheaper than a trip to the doctor."

Western Heating and Air also says check the weather stripping around windows and doors. If you can see daylight through the crack, smoky air is leaking in.