In all my trips to Southeast Asia (at least a dozen times, maybe more) and eating street food, I never once got sick. I’m of Korean descent but was born in the US so my flora is probably similar to my hubby’s, who always gets sick at least once during a trip. We usually ate different things since I was a vegetarian and shied away from straight-up meat dishes (knowing full well that “vegetarian” has a different meaning in Asia than in the US). Perhaps that was the difference maker. But B couldn’t resist the grilled meats, etc.
The one time I got sick was in a fancy tourist hotel in Delhi. Being sick at 5 am in Indira Gandhi airport was not a pretty experience.
But I digress. Enjoy Singapore! We had a great time there and I look forward to any reports.