Firstly, I have scant knowledge of biology, epidemiology, virology, and related fields. If my question seems nonsensical or bewildering, I beg your pardon. I'm not sure how to phrase this, but I'll try my best.
As far as I know, when the Covid virus enters your cells, it releases its RNA so that it can copy itself and replicate and thus spread in body.
Can that Covid RNA strand be "nullified" when it comes in contact with an opposite RNA sequence? In other words, just like if you pour water on a fire, the fire will extinguish and thus the two elements can be considered "opposites" as per my logic. In the same way, can an "opposite" RNA thing exist, which can possibly "extinguish" the Covid RNA? If you know what I mean. The analogy is that the "opposite" RNA thing is water while Covid RNA is the fire. The former can take out the latter.
Is there something that works like this? If not, is it possible to develop something that works like this?
Because that way, the Covid replication process is halted at that first step, and ergo the virus can't infect the body.