How Much Asbestos Exposure Can Cause Mesothelioma Cancer? Railroad FELA Lawyer Provides Answer . Rick Shapiro, a railroad worker injury/FELA attorney with over 20 years of experience, sat down with his law partner to talk about just how dangerous, and potentially life-threatening, asbestos exposure can be to the human body. People who are exposed to asbestos can develop a deadly, non-curable form of cancer known as mesothelioma. Rick mentioned that numerous medical studies have shown that there is no “minimum exposure” level in developing mesothelioma, so even just a brief exposure could lead to developing this deadly cancer.