My stepdad was diagnosed with asbestosis in his late 50’s (about 7 years ago I think).
While he had to retire early from work as a result, he has been able to manage the symptoms through drugs and lifestyle in such a fashion that they don’t impact his life too much. He does suffer from quite bad breathlessness quite easily though if exerts himself too much.
I’d echo what DbG says regarding the EL claim. Because my step dad had to retire due to ill health as a result of exposure to asbestos in the workplace, he has been successful in claiming loss of earnings as well as a sum for the physical damage inflicted. Hollow victory it may be but at least he’s not on the bread line through no fault of his own.
Fingers crossed for benign as well. Best of luck.