Ion generators are devices that produce ions, which are charged particles that can help improve air quality. They work by releasing negative ions into the air, which attach to positively charged particles like dust, pollen, and smoke. This process causes these particles to clump together and fall to the ground, making the air feel cleaner and fresher. These devices are often used in homes and offices to reduce allergens and pollutants. Some ion generators also have the added benefit of neutralizing odors, making them popular for use in spaces like kitchens and bathrooms. However, it's important to note that they can produce ozone, which may be harmful in high concentrations.