Humidifiers are too big sometimes and it's hard to carry one around. That is why I choose Air O Swiss humidifier because they have humidifier at all types of sizes. My personal favourite that I have been using for many years is the Ultrasonic 7133. This humidifier is quite old but it is affordable and it is still great compared to the newer ones. 

One thing that I like about this the Ultrasonic 7133 is that it runs quietly and I can relax and maybe read a few books when this thing is switche...
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