Buying Auction/Salvage RV's

I was very interested in a MH the had signs that read I believe "Bio Hazard". Several years ago I legally got rid of my old asbestos siding going using the EPA rules and watched a house up the street get cleaned out from a known crack house to being sold to a Customs agent. So I thought "Bio hazard" shouldn't be that bad. I posted here like you asking if anybody has done it before or what to watch out for. Got nothing but "don't do it" remarks. The MH was being auctioned at a regular towing yard that the police impounded. My assumption was the MH was used to make drugs. I was going to gut everything and rebuild. Talked to owner of towing yard after the sale. Turns out some guy shot himself in the MH and maybe 3 weeks later was discovered. Glad I passed. 2 summers ago a man died at our seasonal site campground and his son drove up to why his Dad didn't answer the phone and found him. The kids hired a carpet cleaning company and took it to a consignment sales lot. Somebody bought it. I'm still learning about salvaged titles and probally will get one someday. I've rebuilt 2 so far but water damage not major accident damage or body parts soaked into the woodwork. Web sites, after finding the one with Bio hazard I found http://www.copart.com/c2/copart_home_page.html You have to go thru a lot to find one close to you that you can rebuild. Here is link for my previous post talked about above.
http://www.rv.net/forum/index.cfm/fuseaction/thread/tid/26646228.cfm