Do salt lamps do anything:

Well: here is something that I picked up from the British press:

Salt Lamp sold by Crystalite Salt
CLAIM: Negative ions are produced when you heat the salt rock that removes harmful positive ions produced by artificial electromagnetic waves
REALITY: The representative could not answer specific questions and pointed the scientist to the internet. When the physicist contacted the 'Amazing Health' website for concrete evidence she was told to 'try one and see for yourself.'

Concluding their report the team said: "The Voice of Young Science network has published this snapshot to encourage more people, from all avenues of science and indeed walks of life, to take part in actively challenging misinformation."
Peter Atkins, chemistry professor at Oxford University said: "The public is well served by scientists prepared to spend time exposing scientific nonsense...they should be applauded for acting as warriors against claptrap."

seems to say: salt lamps do not " work ".....all I can say is I have a house full and since I have had them I have not had any throat problems...so they wok for me.
try some they are on offer on my site http://crystalrocksaltlamp.com