According to Trusted Source, negative ions can inhibit viral development. Another scientific review in 2020 According to Trusted Source, ozone, which is created by ionizers, can inactivate viruses in the air and on surfaces. Ozone is a colorless gas generated when ions interact with other particles. It renders viruses inactive by causing damage to their genetic material and membranes.
People have begun installing ionizers in businesses and restaurants in response to the COVID-19 outbreak. The goal is to enhance air quality while lowering levels of SARS-CoV-2, the virus that causes COVID-19.