If your body can’t handle a little botulism what good are we? Right?
/sarcasm.
There are limits to everything..... cleanliness and filthiness
I worked in a pharmaceutical facility for 30 years working with biologics and some nasty stuff to boot. I took all precautions for myself and for the product which had to be safe to inject.
On the other hand I go hunting, touch all kinds of dirt and filth...wipe my hands on my pants, eat my sandwich.....maybe, just maybe rinse my hands off in a little creek first...maybe not. .
A nice happy medium.