I had this happen in F(!!!) on a Reno Air flight years ago. Only the woman was in front of me and the fingernails/toenails were flying over the seat.

About three weeks ago, some woman sitting next to me in F on AS was flossing her teeth and grunting as she was digging around in between her molars. It was disgusting. People need to remember an airliner is not their living room.

Never seen toe nail clipping on my 500 WN flights over the years....