This easy box fan filter really works, and uses inexpensive items. Indoor air pollution is a big problem, but this helps. -- The Nourishing Gourmet
{"Image Make": "Apple", "Image Model": "iPhone 7 Plus", "Image Orientation": "Horizontal (normal)", "Image XResolution": "72", "Image YResolution": "72", "Image ResolutionUnit": "Pixels/Inch", "Image Software": "Embettered by PicMonkey. http://www.picmonkey.com", "Image DateTime": "2017:12:04 13:17:23", "Image ExifOffset": "198", "GPS GPSLatitudeRef": "N", "GPS GPSLatitude": "[45, 25, 466/25]", "GPS GPSLongitudeRef": "W", "GPS GPSLongitude": "[122, 27, 5577/100]", "GPS GPSAltitudeRef": "0", "GPS GPSAltitude": "28613/160", "GPS GPSSpeedRef": "K", "GPS GPSSpeed": "338/25321", "GPS GPSImgDirectionRef": "T", "GPS GPSImgDirection": "69825/3196", "GPS GPSDestBearingRef": "T", "GPS GPSDestBearing": "69825/3196", "GPS Tag 0x001F": "8", "Image GPSInfo": "1664", "EXIF ExposureTime": "1/24", "EXIF FNumber": "9/5", "EXIF ExposureProgram": "Program Normal", "EXIF ISOSpeedRatings": "40", "EXIF ExifVersion": "0221", "EXIF DateTimeOriginal": "2017:12:04 13:17:23", "EXIF DateTimeDigitized": "2017:12:04 13:17:23", "EXIF ComponentsConfiguration": "YCbCr", "EXIF ShutterSpeedValue": "8423/1837", "EXIF ApertureValue": "2159/1273", "EXIF BrightnessValue": "3621/1330", "EXIF ExposureBiasValue": "0", "EXIF MeteringMode": "Spot", "EXIF Flash": "Flash did not fire, compulsory flash mode", "EXIF FocalLength": "399/100", "EXIF SubjectArea": "[1638, 1109, 753, 756]", "EXIF SubSecTimeOriginal": "589", "EXIF SubSecTimeDigitized": "589", "EXIF FlashPixVersion": "0100", "EXIF ColorSpace": "sRGB", "EXIF ExifImageWidth": "4032", "EXIF ExifImageLength": "3024", "EXIF SensingMethod": "One-chip color area", "EXIF SceneType": "Directly Photographed", "EXIF ExposureMode": "Auto Exposure", "EXIF WhiteBalance": "Auto", "EXIF FocalLengthIn35mmFilm": "28", "EXIF SceneCaptureType": "Standard", "EXIF LensSpecification": "[399/100, 33/5, 9/5, 14/5]", "EXIF LensMake": "Apple", "EXIF LensModel": "iPhone 7 Plus back dual camera 3.99mm f/1.8"}