Individuals and businesses are scrambling to find new ways to protect themselves from SARS-CoV-2, the virus that causes COVID-19. With this interest, the effectiveness of new technologies that promise to improve indoor air quality has taken center stage. University of Wisconsin–Madison chemists have accepted the challenge of evaluating those technologies and the work is moving quickly, thanks to the lab’s partnership with HVAC (heating, ventilation and air conditioning) specialists at Johnson Controls.