You personally can't do that unless you catch a wild Pokemon already infected with pokerus then as long as you keep it around the virus will spread to other Pokemon.
Chat with our AI personalities
There is no Pokerus in Fire Red , im sorry :(
The action replay code for Pokerus on Pokémon FireRed is 12069C5E 00004288 94000130 FFFE0000 12069C5E 00004280 D2000000 00000000 This code has been tested and verified.
Get a Pokemon with Pokerus and put the Pokemon you want to have it in the party with it. To transfer the PokeRus condition to other Pokemon, have the infected Pokemon in the party with the desired Pokemon and take it out to battle. After a few battles, most (or all) of the Pokemon will have contracted PokeRus.
The Pokerus is not a cheat, but a random status aliment that Pokemon can contract. Obtaining Pokerus is largely random, but can be spread by having a Pokemon with Pokerus in the party with other uninfected Pokemon.
A Pokemon can get Pokerus in any game. You can get pokerus by meeting a wild Pokemon infected by Pokerus. When you have Pokerus, all Pokemon that is with it (your party or a box etc. ) will also be infected by Pokerus. But if it is kept in your party, Pokerus will gradually go away. Your Pokemon does still does get boosted EVs however. if you want to have a pokerus in ur Pokemon that badly just use action replay code to get it... and if u want to remove it then just change your date like 5 days or more