When it comes to air filtration on vacuum cleaners, there's nothing worse than the dank smell that comes out of the dust bag, three quarters into its lifetime before it is replaced. You wonder where the smell comes from since the bag or bin is on view, looks reasonably sealed up and then realise the exhaust cover out the back or on top is where the smell comes from. Sometimes if you have a bagged vacuum and the filter has been ignored for a while, air fresheners only "quieten" down bag dust odour for a while before it comes back again when vacuuming later. Bagless vacuums similarly suffer even if a lot of models these days have a HEPA filter cartridge that ...  Read the complete review