Hello, a few weeks ago I went bowling and discovered there was (what appeared to be dried) blood in one of the holes in the ball (after bowling a few rounds). The blood would be from a stranger. I do have chapped skin and a few cuts so my question is should I worry about contracting HIV? I know it dies once it touches light and air, but since the hole is dark, could the virus survive? (Also, I recognize that this is an irrational fear and am seeking help to demolish this fear.)