I do notice the little things more. Like how a lot of people are just pigs - and sneeze without covering their nose or cough without covering their mouth.
I've seen mention on these these threads about how poor the hygiene practices are in China. Folks, they could stand some improvement here to.
Before I moved to Oklahoma, I had never seen people pull out the top of their shirt and sneeze into it. Never. I guess it’s better than sneezing on someone...sort of.