A couple of years ago, the contractors removed popcorn ceiling from my house. Not sure if there was any asbestos. My question is what, if anything I should do now. Is it possible to have harmfull level of asbestos now two years later after all the vacuming, moping, and airing out? If so what should I do? From what I have read, small amounts of asbestos are found everywhere and are not considered harmfull. Also, the folks who got cancer, worked in factories being covered head to toes in asbestos for several years. How concerned should I be?