Welcome back to the Forum.  Your question suggests that you continue to overestimate the risk of acquiring HIV and other blood borne infections from virtually no risk situations.  If you have searched about these possibilities on the internet you have probably been misled.  For non-sexual transmission to occur, contaminated material must be directly injected into tissue.  Surface contamination is a close to no risk event, both because exposure to the environment makes the viruses non-infectious, because the viruses do not have access to bloodstream, and because in the transfer process the amount of infectious material transferred is diluted more than one hundred fold.  These facts, combined with the fact that even in areas where the infections are “ common” ( in such areas, only a few percent of persons are infected.  “ Common” is a relative term.) the infections are uncommon make transmission of infection extraordinarily rare, if it happens at all.  The risk is lower than the risk of being struck by lightning and not something to worry about.---