COVID 19 S-proteins Claimed to be the Keys of Biological Weapons

S-proteins key to crossover of animal viruses to Humanity.

What will the long term side effects be, if all of Humanity are given the ” S-protein Keys Antigens” to aid their cells to mutate ” New Viral Pandemic Mutations”..?

Were the S-proteins of COVID 19, that allowed the crossover of a Bat virus, not said to be the ” Keys of a Biological Weapon and Antigenic Drifts, for other Coronaviruses to crossover to Humanity”