Hello, I'm glad to answer your question. Your problem is because of the epidemic situation. There is no lunch box for dining cars. There is a homemade lunch box like this one in the picture. Take off the mask on the seat. Does eating silently make people feel immoral?
Of course not.
People are iron rice steel, and people want to eat.
And there is no strong food in it, which will not affect others.
If you really care about other people's opinions, you can take it to a restaurant.