That item doesn't exist in firered.
In Pokemon firered you can't, but in Pokemon leafgreen you can get it then trade it to Pokemon firered.
the sea incense is found somewere in cerulean cave(which is in kanto)
To get Pokemon firered on PC download a vba and Pokemon firered ROM
Yes there are shiny Pokemon in firered
it will let you breed munchlax's without the full incence you will get snorlax
you can find one in the solaceon ruins in a room where there 4 items one will be a odd incence one will be a nu
It is at Mt. Mortar.
Digletts Cave.
if you put it on a Pokemon that goes into battle, you will get more money if you win.
In Pokemon firered you can't, but in Pokemon leafgreen you can get it then trade it to Pokemon firered.
There is no Pokemon convention in firered.
the sea incense is found somewere in cerulean cave(which is in kanto)
Breed a Sudowoodo while it holds the Rock Incence
Sadly you cannot. which i think is odd since its called FIRE red. but anyways you will have to get a different Pokemon game such as Leaf Green and trade for it.
To get Pokemon firered on PC download a vba and Pokemon firered ROM
Yes there are shiny Pokemon in firered
you get it from the Veilstone city. near the gym is a place where you can only reach with rock climbing(i don't know whererock climbing is).there is a pokeball and in it is a full incence hope i helped