To buy: $50; amazon.com. Levoit’s mini air purifier can catch pollen and the other usual suspects that lead to uncomfortable breathing this time of year. It uses a pre-filter to trap large pieces of irritants like hair and lint; a second high efficiency particulate air (HEPA) filter to trap 97 percent of airborne particles that are 0.3 microns in size (think pet dander, dust, smoke particles, and pollen); and a third active carbon filter to absorb unpleasant odors. You can choose between three fan speeds, and the small purifier will clean the air in rooms as large as 127 square feet in about half an hour. Even better, it doubles as an aromatherapy machine. Levoit’s air purifier comes with a small slot at its top where you can add a few drops of your favorite essential oil to an aroma pad, so you’ll be breathing in not only clean air but also refreshing scents, such as peppermint and eucalyptus. Combined with essential oils, it really makes rooms that smell “horrible” much better, according to a shopper. Its 10-inch-tall size is ideal for rooms with limited space, and it’s so quiet, you might have to double check that it’s really on, one reviewer shared. “This makes it perfect for not interrupting sleep,” they wrote. It brings a “huge difference in air quality,” said another shopper, who added that their sniffles decreased after using the device. To buy: $48 with coupon (was $50); amazon.com.