No, if my child was in a Bangladesh school I would support their culture and way of life not flaunt it thinking its ok to send children to school smelling. Clean Hygiene is simple human trait of the western world.
Smelling of curry doesn't indicate poor hygiene. The spices in their diet are the cause, they do not notice it due to olfactory saturation.
Many Asians think we smell of sour milk, due to high dairy/meat diets.
The ingrained habit of good hygiene was widespread in the Islamic world when we still dumping effluent out of the window and into our water supplies.