"Too close for comfort" is an idiom that means something is unnervingly or uncomfortably near. It implies a sense of unease or potential threat due to the proximity, whether physical or metaphorical. This could be because someone is standing too close, or a situation is too risky,.
The phrase suggests a level of closeness that makes someone feel nervous or worried,. For example, you might say "That bus came a little too close for comfort!".
- from dear Google.
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Growing up in in a city like Beijing, it’s always crowded everywhere I went. eg. taking buses, even when people were packed inside as tight as sardines in a can, and yet still more wanted to get in. That was one of the reasons why I always preferred walking whenever possible.
Having been in Canada for a long time, I’m spoiled now with the ample personal space we have here. So when someone pushed me from behind on the train leaving Copenhagen, it was too close for comfort and I automatically blurted out: “don’t squish me!”. Then a young gentleman moved over to my side, he laughed and said: “Sorry, but I’m squished too."
Wish you all a good and comfortable Tuesday, and hopefully no one will get too close to you 
ps. "Laughter is the best medicine". A pic of a very funny painting I took in Stockholm National Museum for your laughter 
"The Jurist"
