 [ Symptoms ] what are the side effects of medication for high blood pressure [ Disease ] exposure to blood does present a risk to others such as hepatitis b as just one example breathing over fresh blood is unlikely to pose any particular risk since pathogens rarely if ever will aerosolize from a simple smear or spill touching blood especially if you have any open wound could pose measureable risk this co worker needs to stop exposing others and of course any contact with this or anyone is blood for that matter requires that you wash carefully and thoroughly with soap and running water afterwards if this person has a contagious blood borne disease that poses risks to others heshe has a moral responsibility to disclose this risk