Long-haul flights can be enjoyable for some and extremely uncomfortable for others. Whichever traveller you are, there are a few things we all have in common such as the necessity of food, water and bathroom breaks. But when there is a full flight and over a hundred people are popping in and out of the loo and queuing to get in, it may seem like one of the major downfalls of flying is the thought of having to share a bathroom with so many people. Miraculously though, the planes rarely fill up with the stench coming from the lavatories. How is this even possible?
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