Negative 'Ions' and Air Ionisers
Devices that release 'negative ions' into the air, claiming that a higher concentration of negative ions will make a room feel less 'stuffy'. Some also claim health benefits such as relieving asthma and depression.
The 'ions' referred to are in fact charged oxygen or nitrogen molecules surrounded by a cluster of water molecules, rather than ions. Scientific studies have shown no particular benefit from a greater concentration of negative ions.
Negative air ionization can reduce the concentration of bioaerosols and dust particles in the air by causing them to bond, forming larger particles and thus falling out of the air. This may help reduce infection due to airborne contamination.
Will you clarify 
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Sssshhhh...
Isn't this similar to the false claims made by the makeup industry that certain creams etc have anti-ageing abilities, as recently reported on the news.
Poor old Laurent G is gonna have to flog some other dead donkey now