Personally I'm always dubious about any product which claims to 'neutralise' odours rather than just cover them up, I've even heard a rumour that some fabric de-smellifiers actually block receptors in your nose so you literally couldn't smell any stench that's there!
This GoodSphere actually sounds feasible however - it pulls in air from the room and bubbles it through a bowl you've filled with water and aromatic essences. Impurities in the air stick to the water as the bubbles escape, letting out cleaner air with a hint of whichever frangrance you choose. So effective, that in a room where someone is smoking, it says the water will turn a muddy brown. That'd put a few people off the nasty habit! Also effective as an ioniser and a humidifier. [Sara Wallen]
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