Wildfire Smoke: Please use the official "VEWIOR" Filter to get the best purification. VEWIOR air purifier effectively clears out sudden wildfire smoke. Give your family a healthy, fresh and clean home. True air filter to help you purify smoke. VEWIOR air purifier with 3-stage filtration system. This comprises of a pre-filter, and an activated carbon filter. Activated carbon filter can filter all kinds of bad odors, including PM2.5, pet dander, pollen, smoke, VOCs. Depending on the quality of the air environment and the length of operation of the air purifier, we recommend replacing the filter every 3-6 months. Before using the air purifier, please take out the plastic packaging of the new filter and place it inside the air purifier. If you have any questions and need support.