I can only speak to the aircraft I'm familiar with...Boeing 787
https://www.donaldsonaerospace-defense.com/library/files/documents/pdfs/071727.pdf
With the introduction of recirculated air ventilation systems in commercial jetliners, more advanced filtration solutions were developed. These included High Efficiency Particulate Air (HEPA) filters that remove more than 99.97 percent of airborne particles both larger and smaller than 0.3 micron, about 1/300 the width of a single human hair! HEPA filters are widely used and capture particulate, bacteria and viruses, but they do not filter gaseous chemical compounds. Other chemical filtration options include Ultra Violet Photocatalytic Oxidation (UVPCO) and Cold Plasma, otherwise known as Close Coupled Field (CCFT). These systems simply cannot match Donaldson APS advantages. Common drawbacks include heavy weight, limited useful life, power requirements, complicated installation, difficult maintenance, inability to fit in all structures, low efficiency, inability to handle highly concentrated or upset atmospheres and production of potentially hazardous byproducts.
https://www.donaldsonaerospace-defense.com/library/files/documents/pdfs/071727.pdf
With the introduction of recirculated air ventilation systems in commercial jetliners, more advanced filtration solutions were developed. These included High Efficiency Particulate Air (HEPA) filters that remove more than 99.97 percent of airborne particles both larger and smaller than 0.3 micron, about 1/300 the width of a single human hair! HEPA filters are widely used and capture particulate, bacteria and viruses, but they do not filter gaseous chemical compounds. Other chemical filtration options include Ultra Violet Photocatalytic Oxidation (UVPCO) and Cold Plasma, otherwise known as Close Coupled Field (CCFT). These systems simply cannot match Donaldson APS advantages. Common drawbacks include heavy weight, limited useful life, power requirements, complicated installation, difficult maintenance, inability to fit in all structures, low efficiency, inability to handle highly concentrated or upset atmospheres and production of potentially hazardous byproducts.