If you live in the Northeast, you're probably well aware that it looks like a dystopian war zone outside. Wildfire smoke blowing in from Canada has created dangerously bad air quality in New York, New Jersey and surrounding areas. Aside from staying inside, shutting all doors and windows and wearing filtration masks when necessary, you can help keep your home air quality at a safer level by investing in an air purifier.Air purifiers act as filtration systems using a HEPA filter that can combat everything from viruses and airborne particles and bacteria, to allergens, pollen and other air pollutants throughout the home, the classroom, dorm room and other important spaces.