Here is a smart air purifier that can capture up to 99.99% of particles, as small as 0.3 microns. The Philips 5000i Connected Air Purifier reduces odors, gases, and allergens. Its companion app lets you track and monitor your indoor air quality from your smartphone.
The purifier is as small as a travel carry-on with 4 wheels, so you can move it around easily. The Philips 5000i air purifier costs under $700 at this time.