Breathe easier with a quick cabin air filter swap you can handle yourself. Installation is commonly at the glove box area—look for a small cover underneath or behind it, then follow the airflow direction arrows when sliding the filter in; some vehicles flow top to bottom. Some vehicles aren't equipped with a cabin air filter, so check for an access door before you start.
Most are behind or underneath the glove box. Look for a plastic cover held by Phillips-head screws, remove it, and you'll see a rectangular door with tabs. Pop the tabs to reach the filter. If the glove box won't drop, disconnect the small damper/rod; some have a tab that makes sliding it off tough, so release the pin on the other end instead. On some vehicles a left-side swivel restraint needs to be unhooked.
Follow the airflow arrows on the filter. If your vehicle's airflow goes top to bottom, the arrows should point down. Don't rely on an OEM "up" marking if it's only an orientation cue for the holder. Match the filter's airflow arrows to the actual airflow direction through the housing to reduce restriction and bypass.
Check it about once a year and replace as needed. Driving on dirt roads can load a filter faster, so expect to swap it sooner in those conditions. Make sure the new filter seats fully in the housing to reduce bypass, and if your vehicle sits in high heat, inspect the filter for any adhesive softening during changes.
A standard particulate cabin filter is not designed to stop smoke. To address smoke you'd need a charcoal filter. For dust and other particulates, some filters are rated to stop very small particles down to .001 microns, but verify the specific filter's rating and choose charcoal if smoke is your concern.
Filters