In times past, we have done things without knowing the risks. Smoking is a great example of this - it only became a problem as people got older, and started to be more prone to contracting cancer due to smoking. It was really because of World War 2 that a revolution took place socially, and women went to work, and smoked as they did so, and then paid the price 20 or more years later.
The same thing happened with asbestos. It was used for roofing, siding, industrial buildings, insulation, and as a fiber that binds together other products, such as crack filler for plaster house walls. We now know of course that asbestos was a major cause of
Mesothelioma cancer. And it was actually the responsibility of the employers to ensure the safety of their workers, instead of blindly using whatever products were suitable to increase profits by speeding up the job.
So, if you know of anyone who has Mesothelioma then they might be able to get help in dealing with aspects of it.