Kev3188 Veteran Joined Oct 5, 2003 Messages 18,552 Reaction score 9,407 Location Right in the middle. Sep 4, 2015 #1 With 2155 colony-forming units (CFU's) per square inch, the winner is: http://www.phillyvoice.com/study-dirtiest-place-airplane/
With 2155 colony-forming units (CFU's) per square inch, the winner is: http://www.phillyvoice.com/study-dirtiest-place-airplane/
