How can you replaced dirty air?

To replace dirty air, you can improve indoor air quality by increasing ventilation, which involves opening Windows or using exhaust fans to allow fresh air to circulate. Air purifiers with HEPA filters can also remove pollutants, allergens, and particles from the air. Additionally, incorporating indoor plants can help absorb toxins and enhance air quality naturally. Regular cleaning and reducing sources of indoor pollution, like smoking or using harsh chemicals, also contribute to cleaner air.