Monkey Pox could be converted into a more smallpox like virus by genetically combining it with Smallpox virus genes, perhaps from old Smallpox vaccines? Crosses could be made between common airborne viruses and lethal viruses that were not normally human to human. Avian and Swine influenza combined with human Influenza? Ebola combined with human influenza? Smallpox vaccine combined with human influenza? HIV virus combined with common cold viruses or human Influenza?