Panic buying hits Singapore
https://www.straitstimes.com/singapore/health/coronavirus-fairprice-chief-urges-calm-amid-panic-buying-of-groceries-singapores
And Hong Kong
https://www.businessinsider.com/hong-kong-line-masks-supermarkets-empty-coronavirus-2020-2
Will hit BD as soon as it hits India. The panic will hit in a single day, and that day will be the worst.
It's the panic that harms more than the infection. If you want to stock, stock toilet papers and sanitary products only. Not food item.
China hasn't ran out of food in any city. The gov has ensured food supply to continue.
Plus ensure you have multiple redundant net connection. You might have to perform office work from home. As is happening in China.
Also keep a crowbar ready [ the nearest thing in bengali might be "শাবল" ] for defense. There will be looting and home invasion if things drag on for long -- that's the worst case scenario.