The Levoit Core 200S Smart True HEPA Air Purifier has been a great addition to our home as it not only provides noticeably easier to breathe air, but it also has helped with sinus issues! We keep this particular filter in our bedroom to help my husband who has sinus issues, it has really helped his breathing issues at night.  The air feels fresher, cleaner, and lighter. It helps eliminate any odors and helps keep our room smelling wonderful. The Smart feature is also great as the controls for the purifier can be quickly and easily accessed through the app to run the purifier, set schedules or timers and adjust settings.