Poppy seeds (khus khus), commonly used in Indian cooking, can be risky to carry on international flights because they come from the opium plant and may contain trace amounts of opiates such as morphine and codeine. Aviation expert K Anuradha Suresh says several countries, particularly in the Middle East (including the UAE, Saudi Arabia, Bahrain, and Kuwait) and parts of Asia (including Singapore, China, and South Korea), have strict drug laws th…