Yikes. I&#x27;m glad my house was built in the 80&#x27;s. No asbestos, no lead in the paint, no mercury hiding out in my ceiling.<p>How dangerous was this contamination, though? I know mercury evaporates, and that it is an air quality concern, but given its location and assuming normal levels of indoor air movement, is it worth $50k to abate it?<p>I tend to be skeptical of mold issues, for example, but I also imagine that mercury is way more harmful than mold spores, mostly because you can&#x27;t smell mercury.