It's not a cure, a stronger immune system will only increase your probability of survival if you do catch it.
The safest place on Earth against the CoronaVirus right now is North Korea .... oh the irony.
The Australian government believes the virus can't be spread during the incubation period (up to 14 days) where infected people show no symptons. The Chinese government believes the virus is infectious during the incubation period. Who to believe?