I use a similar setup just for near my cat litter box. Almost totally eliminates pet smell. I have an AC Infinity fan I really like, it's very quiet on the lowest 3 of 8 speeds. The filter is just some generic brand. I never want to own pets without this level of air filtration again.
No offense intended, but the best way to reduce any potential odors from your cat’s box is simply to pick it up regularly. Several times per day when my partner or I pass the box we scoop it and place the waste in a sealed bag in a sealed bucket. Takes 30 seconds. Never had issues with odors and the cats appreciate a clean box, just as any person appreciates a clean bathroom (more so for cats with their stronger sense of smell). And from time to time fully empty and wash down the box tray with soap. We’ve been shocked by how poorly many people maintain their cat boxes, which leads to the misconception that cats are smelly. They are incredibly clean animals, far cleaner than we humans. And we’ve been asked by some guests why our house doesn’t have that “pet/cat smell.” Empty the box regularly, you’ll be amazed by the results.
Counter point: I don’t eat raw uncooked mice nor lick my excrement shoot. Then again maybe it’s because I have unrefined country barn cats who are lacking culture.
