Safety at workplaces, occupational diseases, pandemics, international travel, public transportation, day care centers, nursing homes, and jails, among others, are situations we are frequently involved in and whose impact and risks we are not aware of but could change the course of our lives. When we travel abroad on business or vacation usually our expectations are high, but we have no information on the process undertaken to secure passengers health, as well as community and environmental safety. When we share a closed space such as an airplane, we should be aware of some diseases, especially air borne diseases, to be able to assess exposure risk and minimize it by adopting biosafety measures (individual, collective or both), and have the proper infrastructure to contain or isolate such risk.