Good for smoke

We live in a house that is a rental property. The upper levels of the house are split into two as a duplex. The basement has an efficiency apartment. We didn't pay attention when we moved in that smoking was permitted in the house. Tenants who smoke heavily moved into the basement and the smoke went straight through the ducts into our apartment. It was incredibly bad and the landlords were unresponsive. We bought the WW 510 after seeing it had high ratings in CR. We were hoping it would be strong enough to cover our whole apartment. Our downstairs kitchen, living room and dining room are about 510 sq ft. It does well taking care of all those rooms. The air flow is excellent. It is not loud. It has four speed settings, which we appreciate. Only problem is that the speed button got stuck on low and we couldn't find out why. Eventually I popped off the front of the purifier and the speed became changeable again. It is a little big. Overall, a good air purifier. Truly a best buy.