Quarantine and prayer mostly. Other methods included carrying pomanders or other sweet smelling things on the assumption it was foul air which would make them sick. Bodies were buried in mass graves, though excavations have found a lot of the usual burial rituals were still followed, so it was probably more about the sheer number … Read more

Some of the liquid will evaporate, but it'll leave a residue. You can sometimes extract DNA from semen stains months afterwards, even after multiple washings, suggesting it's pretty tough to remove completely!