Air Purifiers
Sliced Bread
00:00
Introduction
Send in your adverts, trends and product claims for me to investigate. You can send them over on email to slicedbread at bbc.co.uk or you can now send a WhatsApp voice note to the number that will give you at the end of the episode. Today's topic comes from Laura Smith in London who is looking into air purifiers. She wants to know more about household air pollution and what it might be doing to us. So I called up Professor of Atmospheric Chemistry Aleister Lewis to get his opinion. He says we need to unpack little droplets of liquid or solid particles made out of either alcohol or water. That's maybe tenth to fiftieth
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