How did you catch your last cold or bug?? From someone else.
Thanks. From WebMD:
Municipal water supplies
Ice made from municipal water
Foods and drinks sold by street vendors
Vegetables grown with water containing human wastes
Raw or undercooked fish and seafood caught in waters polluted with sewage
When a person consumes the contaminated food or water, the bacteria release a toxin in the intestines that produces severe diarrhoea.
It is not likely you will catch cholera just from casual contact with an infected person.