Apple Cider Vinegar does have the ability to kill germs and some viruses.
Apple Cider Vinegar is a natural antiseptic and disinfectant as well and it's mostly due to the vinegar in the apple cider vinegar.
Even just using plain white vinegar can kill most germs and some viruses.
But to ensure that you kill viruses such as the flu virus, cold virus or Covid-19 Virus or any other virus it's best to use tried and proven commercially made disinfectant.
But vinegar and apple cider vinegar do kill some germs and viruses and even vinegar makes a good natural cleaning solution for windows, glass surfaces, computer screens and TV screens as well.
I use some diluted vinegar to clean my windows, TV screen, computer screen and my glass on my coffee table.
Vinegar also works good for cleaning and disinfecting a phone with.