Got underwear?

I have never heard this before in all the preparedness classes I have attended, but a young mother that had been in one of the hurricane disasters was buying large amounts of 'underwear' for children. When the disaster strikes, kids get scarred, and even if they are potty trained, they wet their pants a lot. No time, or no place for bathes and keeping children washed up, so they develop medical problems from the unsanitary situation. She was also saying to get diapers for the smaller potty trained children. Toilets are not as available, and with the diaper on, the mom's can just tell their younger children not to worry about it, and to just go in their diaper. Also socks. She was buying lots of socks. Perhaps that is because the socks get wet when the child wets. Something to consider.