wanting to know, but not understanding the answer

Paint chips fall onto my bed from time to time.  It has become a habit to brush the sheet off with my hand before I lie down.  I wonder, when I do this, with what level of efficiency is the task being completed?  Am I wasting my time?  I worry that in my determination and speed, I am really only causing my hand to push down too hard on the mattress, and then the crumbs of lead paint are either flung back over my rapidly moving hand in the opposite direction, or they are further pulverized into some cancerous dust that ingrains itself in my 200 thread count sheets.  I am especially wary of the latter scenario; I am prone to lying on my stomach when I sleep, and I also don't rest my head on a pillow very often.  I feel as though this is the perfect storm of cancer-related bedroom accidents, and I just hope the amount of lead paint dust that I inhale is small enough to preserve life for a little while longer.