How to Purify the Air in Your Home Essential Oil Diffusers. Essential oil diffusers don't just ooze out a sweet aroma, they're also great air purifiers! ... Indoor Plants. ... Beeswax Candles. ... Open a Window. ... Turn up the Air-Conditioning. ... Air Purifier. ... Salt Lamps. ... Activated Charcoal. More items... Mar 23, 2022