I’m not saying I would do this, but if I visit your home, I might look around to see if you have an air purifier. If you have one, I might estimate the cubic footage of your room and then, if I’m left alone, I might open the purifier to …

You don’t buy an air purifier in a vacuum, literally. Perhaps your old purifier is no longer working or you’re an indoor air novice, but the moment has come for you to buy an air purifier. While you might be tempted to purchase something small that can be tucked away …