Yes! Tight fitting respirator face masks are excellent at filtering fine particles found in forest fire smoke. The government of Canada states "If you must spend time outdoors, a well-fitted respirator type mask (such as a NIOSH certified N95 or equivalent respirator) that does not allow air to pass through small openings between the mask and face, can help reduce your exposure to the fine particles in smoke. These fine particles generally pose the greatest risk to health. However, respirators do not reduce exposure to the gases in wildfire smoke. It is important to listen to your body and reduce or stop activities if you are experiencing symptoms." You can learn more about wildfire smoke from Environment and Climate Change Canada at this link.