Possible Clues:

• Pollution is eradicated, partly by this?
• Electrical device purifying air
• Device improving room air quality
• Device used to improve air quality in a room
• It's meant to clear the air but fan doesn't start
• Device for improving air quality —noisier (anag)
• One old acrylic perhaps brought over for pollution remover
• It is used to improve air quality in a room
• Producer of charged particles
• Producer of charged particles to freshen air