Luminaire with biofilter

A method, comprising:

• (1) emitting light from a light source arranged in a housing of a luminaire, wherein the light source includes multiple light sources configured to illuminate a space, and wherein at least one of the multiple light sources emits general illumination light in the space,
• (2) drawing air, via an air circulation system, into contact with a biofilter arranged within the housing of the luminaire, wherein the biofilter treats the air, and
• (3) outputting the air treated by contact with the biofilter into at least a portion of the space below the air circulation system and the housing of the luminaire illuminated by the light source,
• wherein the biofilter comprises:
• a substrate which is permeable to air,
• a microorganism arranged on the substrate and configured to treat the air, and
• an air-permeable membrane located on an outer surface of the substrate,
• wherein another of the multiple light sources is configured as a biofilter light source to illuminate the microorganism on the substrate of the biofilter.