Air Purifiers

I have two Wind Curve Tower Fans with Fresh Air Ionizer. I was wondering how can I go about cleaning them? Does it contain any filters? If so, how I do take it apart to clean them. The fans are dusty in the inside that’s why I am in desperate need of your help. Thanks

I saw this online and was wondering if it would get rid of the smell of weed if I smoked inside?

—> Lasko 42" Wind Curve Space-Saver Fan

All help is appreciated.