Airport Security liquids Bag

[PAXboy]

Thread drift but an amusing moment (I hope) talk of pressure change ...

Last August I went from CPT to JNB and the cabin pressure was fine but JNB is at some 5,000ft. When I unscrewed the cap of my roll-on deodorant I met a new problem. The unit was almost empty and so the air inside the container was at sea level, which was applying pressure to the roller ball which was suffused with the liquid deodorant. As the cap came off, the ball was ejected several inches and the remaining liquid followed - all of which landed inside my still part filled suitcase.

You will readily understand the similarities of having a large ball ejected, with a long trail of white goo, which covers much of your clothing and leaves you with messy fingers ...