You want to get that mold problem out of the house. >> for all those people packed into these rescue centers, we're talking thousands in some places, a cold can ved throuspr through that. >> i was at evacuation centers in houston, the doctors are making sure every is clean. tacking to the evacuees, my area is clean but the person next to me might not be as clean and they may start coughing and sneezing. the doctors extremely worried, flu. if things start progressing, flu could go through that area, any kind of communicable disease, measles could cause a big problem. these are big issues any ti...