King cobra toxins are mostly a mixture of phospholipases and neurotoxins that act on the cholinorgenic system to cause paralysis. Death from a king cobra bite usually occurs because the paralysis of the lungs prevents one from breathing, causing death.

A few important things to consider:

• The damage from snake venoms is acute, not chronic. We actually have a lot of proteins similar to those found in snake venoms, the difference is that in snake venoms these proteins are over-active and delivered at a very high concentration. A snake venom delivered at such a low dose that no acute damage occurs is unlikely to produce any type of chronic damage in the long term.
• Snake venom proteins are actually fantastic tools for medicine. For example, the hemolytic proteins from the vipers are used for diagnosing blood-clotting disorders. The fact that these are biologically active allows them to be used as tools, when used in the right setting with the right concentration!
• The toxic molecules in snake venoms are proteins, so “adding snake venom to the water” is not very dangerous. You can drink snake venom and you will be perfectly fine, as the proteins denature.
• Snake venom proteins are very well known, and you can’t really hide a snake venom in an mRNA vaccine. It is trivial to find out if that is the case.

If you are interested in the topic of snake venoms, I recommend:

“Handbook of Venoms and Toxins of Reptiles” by Stephen P. Mackessy

It is one of my favorite books. This book pushed me to study Biochemistry as bachelor.

There’s nothing wrong with using natural poisons to make stuff. We do it all the time. You may know Botox ? Its made from the most poisonous toxins known. Snake venom is used similarly in research, but its not possible to deliver it as medication easily.