Well we have Iron Man why not Aluminium Man?
Seriously though the dose makes the posion. Water is lethal too even though we are made up of mostly water.
Does anyone here baulk at the radiation exposureooking at our TV's or phones gives? If you break a bone do you deny yourself an X-ray because it emits harmful X-rays? Do you take a cruise ship over a plane across the world because up in the sky you are exposed to more radiation? Do you avoid eating or drinking 'non organic' foods because it may have had pesticides sprayed on it? Do you test the soil you eat your food or drink your tea to ensure it has no nasties like arsenic or fluoride? Do you expose yourself to trace amounts of metals which are eliminated from the body in any regard to prevent yourself contracting killer diseases?
Why is the thing which actively saves lives the one we stop to question but we don't give a shit about all the other things in life?
Smallpox killed hundreds of millions of people. That wasn't fake news. Does anyone know anyone who has contracted smallpox lately?
Don't get me wrong. I love a good conspiracy. Here's one. The reason why governments still keep smallpox alive in labs is so when the next unvaccinated generations is the only ones on Earth, they can release it as a form of 'population control'. Accidental release from a lab. Sorry about that! Of course all the VIPs and anyone working on it is vaccinated.
This is why small pox is not part of the usual vaccination program.