Bests & Worsts Reviews from Amazon

I purchased 2 Asakuki diffusers and both started smelling musty after only a few uses. Even though I have tried cleaning both, I cannot use them at all. I have other diffusers that do not have this problem, so I assume that it has something to do with the quality of the plastic materials that are used and that they aren't anti-bacterial. I definitely will not purchase this brand again.