While useful for killing pathogens including SARS-CoV-2, 222-nanometer UV lights may produce harmful compounds in indoor spaces, and should be used with ventilation, MIT researchers have found.
Germicidal UV lights could be producing indoor air pollutants, study finds
Germicidal UV lights could be producing air pollutants
Ultraviolet light can kill almost all the viruses in a room. Why isn't it everywhere? - Vox
Germicidal UV lights could be producing indoor air pollutants, study finds
School of Engineering, MIT News
Air purifier - Wikipedia
Germicidal UV: a tradeoff between disinfection and indoor smog
Viruses, MIT News
Cleaning indoor air may prevent COVID-19's spread. But it's harder than it looks
Sustainability, Free Full-Text
MIT Study Warns of Indoor Air Pollutants from Germicidal UV Lights in