226 Chandigarh, May 22 In the backdrop of increasing evidence of airborne transmission of SARS-CoV-2 via aerosols, the Central Scientific Instruments Organisation (CSIO) here has developed a disinfection system for air conditioning and ventilation ducts. Where can it be used The ultraviolet (UV) light-based system can be used in auditoriums, large conference rooms, classrooms, malls and other public places. It will provide a relatively safer environment for indoor activities during the current pandemic. The ultraviolet (UV) light-based system can be used in auditoriums, large conference rooms, classrooms, malls and other public places. It will provide a relatively safer environment for indoor activities during the current pandemic.