If you want to get an indoor air filter to clean up the toxic air that enters your home, I recommend an industrial solution. Go down to your local indoor growing shop and check out the carbon filters that the pot growers use to scrub the weed smell.
Compared to my proposed industrial solution, the air purifier costs $100 more and is about 1/4 the CFM. The only pluses are that it looks pretty and is roughly 2/3 the DBA when running.
Get a filter like this: https://indoorgrowing.com/collections/vortex/products/profil...
And pair it with an inline fan to match like this: https://indoorgrowing.com/collections/vortex/products/vortex...
That gets you 400CFM of air cleaning power for ~$500. (you can get this stuff for much cheaper used as the margin on indoor pot growing has tanked)
Compare to a "designed for the home" air purifier like this: https://oransi.com/products/mod-hepa-air-purifier
Compared to my proposed industrial solution, the air purifier costs $100 more and is about 1/4 the CFM. The only pluses are that it looks pretty and is roughly 2/3 the DBA when running.