You can get around that by getting a phone number from a fairly distant location. Spoofed numbers will almost always use the same area code as your number. So if I were to get a phone number from, say, Presque Isle, ME, and started getting calls from the 207 area code, I’d know that I could safely ignore every one of them.
Asbestos is mostly bad to the people that work with it, or manufacture products with it. If you have asbestos in your house or building, 99+% of the time it’s fine, and you don’t need to do anything at all. All of the remediation that we did in the 90s and early 2000s did more harm than good. Like, floor tiles with asbestos; how are the chrystotile fibers embedded in the tile going to break out in enough volume to cause harm to people?
On the other hand, the people that manufactured and installed asbestos-based products were often entirely fucked over.