Ahhh … so, in that case I can say that all in general (Pokémon/Yu-Gi-Oh/MtG/etc) …
What I’ve seen from my country is that most places where people gather are very closed areas (no windows) … In addition, there’re no air conditioner, so you can imagine that people literally breathe sweat there … (especially in summer)
I don’t go to card shops to play … I only meet with people in a specific place just to buy Pokémon/Yu-Gi-Oh cards … They are very fast interactions …