Mastic with asbestis on plywood floor
In our 1951 home The previous owner removed floor tile took down the mastic to the plywood an re-carpeted. We see evidence of residual yellow and black mastic in plywood fibers. With a wet paper towel I can wipe up small black flakes that will track if you get them on your shoes They don’t track if the floor is dry. How can I safely and cleanly carpet over this?