I've used these in my house for a few years and they work great, these can filter out most dust/pollen/smoke/smells out of the air when running. If you messed up on a meal somehow and your whole living room is filled with smoke, this will clear it up entirely within 5-10 mins. It especially helped during the wild fires.
Both work great, I've cleaned them out and the filters, the filters are reusable but not washable, just brush/blow the dust off. The fans have no issues or noises.