
Coway
Airmega AP-1512HH Mighty
Durable, effective for allergens/odors, but loud on high.

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I also have a couple of BlueAir and the scheduling feature for smart purifiers is very nice to have. I have it set to run on the lowest fan setting all the time which is so quiet it's undetectable, and ramp it up for a few hours in the afternoon right before we get home from work.
Multi level approach works well. - Decent filter you change more regularly for your HVAC (agree with others that MERV shouldn't be too high) - Clean floors, if you have carpet get a deep carpet cleaning annually - Room air filters. I've had luck with Blue Air. Have one jig one for living room and some small ones for the bedrooms. - Have you tried using regular saline rinses for your nose? I use the powder saline mixes with the plastic applicator from NeilMed, but there are others out there. While my allergies are pretty mild, I haven't needed to take any allergy medicine at all since using these.
Seconding Blueair! We have a Levoit and a Blueair; while I have nothing bad to say about the Levoit, I personally prefer the Blueair (granted, it was about twice as expensive). We've got two medium-sized dogs, and - aside from the clumps of dog hair under the baseboards - you wouldn't know that we had any pets!
I love my blueair. It's highly rated for the price, and has a cloth sleeve you wrap around the outside and toss in the wash that prefilters out the husky fluff. If your pup is smelly it's probably oily, and needs either more roll in leaves and dirt time or more frequent bathing. A simple rub with a damp cloth frequently, like daily if you're not using soap, will work wonders.
In my experience, my blueair filter and/or levoit filter can clear the smell out within an hour indoors on the highest fan speed. I mostly vape in my basement with one of the purifiers running and it mostly contains the smell. If I wanted to eliminate it almost completely I’d do that plus seal the bottom of the door and also exhale into one of those smoke buddy things. I’m also in a duplex and it doesn’t smell much outside but if I do it near the house then my neighbours seem to close their patio window aggressively. It’s totally legal here and they can’t do anything about it but I don’t want to be rude so I mostly stay indoors (or go on a walk).
I’ve got a levoit and a blueair in different areas of my house, mostly because I grow at home. But either one can clear vape smell in about 30 minutes or so on the highest fan level (that’s with no windows open in the winter).
We have a few Blue Air, 4 of them. They are expensive but worth the price for me. The app works great and the filter replacements are a breeze (filters also last). They also don’t look stupid which is nice. You can replace HVAC filters with basic MERV5 cheap ones as well. This helps the furnace and AC run better with less restrictive airflow. Big BlueAir guy.

Coway
Airmega AP-1512HH Mighty
Durable, effective for allergens/odors, but loud on high.

Levoit
Vital 200S-P
Smart, effective dust/odor; some find replacement filters pricey.

Winix
5500-2
Budget king, durable; poor VOC removal, Plasmawave disliked.

Coway
Airmega Mighty
Durable, great for allergies/dust, responsive auto-fan.

Winix
5510 & 5520
Good value, durable, effective for pets; carbon filter issues.

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IKEA - UPPÅTVIND

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CleanAirKits - Corsi-Rosenthal Box

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Austin Air - Healthmate Plus

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Winix - 5500-2

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Coway - Airmega 400

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Coway - Airmega AP-1512HH Mighty