From india,went to a non-ventilated atm with a heap of waste on the corner,seemed like swept aside sometime back,very scared about hantavirus in air.

Hantavirus very rare: The pile of dust/dirt you described had been sitting there for sometime? That's good because you don't want to breathe in clouds of that material - that would be the only way u could get hanta-- assuming the virus is even there. I think your chances are essentially zero in fact. Better to practice good hand hygiene - that will minimize health risks while traveling.