The UK market for air care products is expected to grow to £674 million this year - and for this episode, we're investigating just how these products tackle bad smells in our homes. Can air fresheners really "eliminate" stinky odours with science, or do they just smell nicer? And what does using them do for our air quality? That's what listener Conor from Manchester wants to know. He joins Greg in the studio, alongside two experts - Nicola Carslaw, a professor in indoor air chemistry‘ at the University of York, and emeritus professor of chemo-reception at the University of Manchester, Krishna Persaud.

Have you seen something promising to make you happier, healthier or greener? Want to know if it's SB or BS? Please let us know - you can email sliced.bread@bbc.co.uk or drop us a message or voicenote on Whatsapp to 07543 306807.

PRESENTER: GREG FOOT PRODUCER: TOM MOSELEY