Okay, so the user wants to know if an air purifier helps with dust and how they work. Let me start by breaking down the main components. First, I need to explain how air purifiers function in general. They use fans to circulate air through filters. The key here is the HEPA filter, which traps particles like dust. But wait, not all purifiers use HEPA, so I should mention other types too, like activated carbon for odors and ionizers, though ionizers might have downsides.

The user emphasized avoiding marketing buzzwords, so I need to keep the language simple. Terms like "whisper-quiet" are out. Instead, maybe say "quiet operation" without the hype. Also, make sure to vary sentence structure and use contractions to sound natural. Let's see, start with a hook about dust being a common issue, then explain the mechanics.

I should mention how dust isn't just dirt but includes skin cells and allergens. Then, the process: fan pulls air, pre-filter catches big particles, HEPA gets the tiny ones. Maybe add something about how often to replace filters. Also, clarify that purifiers reduce dust but won't eliminate it completely. That's a common misconception.

Pros and cons: pros would be reducing allergens, easier cleaning, better air quality. Cons could be ongoing filter costs, noise on high settings, and maintenance. Need to present those in the component as instructed.

FAQs are required. Think of common questions: How long to see results? Do they work for pet dander? Do they use a lot of electricity? Should windows be closed? Explaining each concisely.

Make sure to add some subjective experience, like mentioning that while it's not a magic solution, the difference in air quality can be noticeable. Avoid repetitive structures, mix short and long sentences. Use terms like "HEPA" but explain them. Also, check for passive voice and replace with active. Alright, structure the sections with headers, but in MDX without markdown. Wait, the user said to return the content directly without markdown blocks. So just write the text with the specified components inline.

Double-check for burstiness and perplexity. Use transitional phrases like "Here's the thing" or "On the flip side." Maybe include a personal touch, like mentioning sneezing less after using one. Avoid sounding too technical but still thorough. Alright, let's put it all together.