A mobile collector with a short host to connect directly to each machine currently in use is certainly a cost-effective way to approach the situation when budget doesn't permit a large, permanent installation. The bottom line is that dust collection (not just chip collection) is a seriously important part of setting up shop relative to your health. Given your medical history, you don't want to encourage other health problems from inhaling fines. You'll probably want to use a personal respirator, too...talk with your doctor about that!