Not too worried, but that's what I'm doing just in case supplies chains break down. Mostly beans, dried fruit, chicken stock. You might want to get a few things to boost your immune system, and to compensate for less then ideal nutrition. Vitamin C, D, B12 are the most important ones. Thyme is supposedly very good. Tea, green & rosehip. Red wine, chocolate.

Don't bother with masks or anything, you probably won't be able to avoid infection anyway. Also I'm already convinced the panic & paranoia will cause way more disruption then the virus itself.