Prior to moving to Qatar, I lived in China for 3.5 years. If people easily get sick, DON’T go to China. Everyday occurrence to witness a Chinese granny hocking one up from the deep and letting it fly.
I lived in one apartment complex and the sounds from people early in the AM were used like the chicken roosters, hear the noise, time to wake up and start your day.
Worse one witnessed was when I was eating a nice hotel dinner. Guy next to my table harvested one from the deep and planted it right there on the carpet beside his table. Freaking Nasty!