Jennifer, I also have the same concerns as you do about my linoleum floor in my kitchen. It is an old floor from about the 1970s from the look of it, and there is yet another linoleum floor right below that one! I need to remodel the kitchen, so I'm debating what to do about the floor...I know there's the possibility of asbestos. I already had the vinyl floor tiles and the black mastic in the finished part of the basement tested and the tiles and mastic contain a very small percentage of asbestos. Honestly, right now I would rather have a brand new house instead of dealing with all the remodeling/repair/asbestos issues.