The mucous membrane of both sides of the septum (the cartilage that separates the nostrils) can be damaged by decreased blood supply, along with drying, crusting, and nose picking. This results in a perforation or hole in the septum with more crusting, foul secretions, nosebleeds, and whistling with nasal breathing, the so-called coke nose.
GLENN: We just found some more pictures of the president with the fly and I just have to go back because, Pat, Stu brought his picture in. Its from the same press conference yesterday.
Obama was flipping burgers at a backyard barbecue in what the campaign hoped would be an exquisite photo opportunity. A fly began circling his head and then more flies. Pretty soon flies were swarming him. It was awful to watch.