Hi, I'm currently sitting on a train which is packed! I'm on a prebooked journey and have another two hours to go. It turned up with only 5 carriages instead of 10. Most people are wearing masks, a few aren't. I'm wearing a mask as required. My issue is a man has sat next to me, he's sat with legs splayed so I am squashed against the window. He's not wearing a mask and coughs, yawns etc without covering his mouth. There are no empty seats. Do I ask him to cover his mouth when he coughs, or do I just gather all my stuff and go stand in the back of the carriage for the next two hours?