I can't (we can't) live without a vapouriser when DD is sick. It makes a huge difference to the quality of her sleep at night - thus mine. The trick is to get a good one that is easy to clean. I.e. The issue with a vaporiser can be the build up of icky old water or mould spores etc. Ours alas is not easy to clean so we will be swapping this winter with another model.