If there is a stale smell in the air coming from the kitchen, what should one check for the source of the smell?\nOptions:\n- bathroom\n- house\n- cupboard\n- space shuttle\n- surface of earth
Step-by-step reasoning:
cupboard
Stale means food that is no longer fresh and pleasant to eat.

Cupboard is a place in kitchen to store food.

.

Final answer: cupboard