Wave of Covid in Singapore now, although I believe a lot of Asians mask up for colds and flu.
Yep, masks are a very common everyday thing. They wear them for things like pollution, colds, allergies.... Been doing it for years and years. Nothing special there.
Wife and I are in Vietnam now and just got over a mild case of covid. Very many Vietnamese are masking whereas very few westerners are. Understandable given the way the country was slammed by COVID-19.