They were talking about how even though in Hawaii the temperature can be 32 degrees it still doesn't feel as hot as it does in Osaka.
I chimed in.
"It is because there are no bugs." I sagely imparted.
I got The Quizzical Look.
I tried again "It is because there are no bugs". I apprehensively ventured.
After one of those uncomfortable silent moments, they made a guess.
You mean not muggy?
Yes, that's what I was saying, "It is because it is not as muggy in Hawaii as it is in Japan.
mushi by itself means bug;
mushi in conjunction with atsui means muggy.