it makes perfect sense to be careful with any reagent that is designed to denaturate / kill living matter. That is just pure common sense.
Unfortunately common sense does no longer seem to be common these days.
In that respect common sense can only take you so far.
I have used, and still use, a reagent known as sodium dodecyl sulphate (SDS). In the lab it is used to strip the outer cell membrane off eukaryotic cells (i.e. cells like yours and mine, unlike prokaryotes like bacteria) to gain access to the cell contents - a process known as lysis. Typical usage might be to disrupt a sample of cells in a centrifuge tube before gradient centrifugation to separate the cell contents into stratified fractions of nuclear material, ribosomes and so on. It is very good at this - a low concentration will strip all the cell membranes off a sample in seconds. So, very good at denaturing/killing living cells, right?
If you had a good biology or chemistry teacher you may even have used SDS in a (high) school experiment. If you scrape the inside of your cheek with a spatula you can get quite a good harvest of cells. If you treat this with SDS to disrupt the cells and then treat the lysate so formed with alcohol you can extract a stringy, gloopy sample of your own isolated DNA. If you've done this you've seen quite how good SDS is at destroying living cells.
[ pause ]
SDS is the name you'll see in chemical catalogues, scientific papers and so on - the IUPAC name. There is another parallel naming system for a subclass of chemicals that gives it a different name - sodium lauryl sulphate. Now those who read the labels on their household products will probably recognise this. It's the principal ingredient in most washing up liquid, it's also a principal ingredient in toothpaste.
If this stuff is so demonstrably lethal to cell membranes how can you do the washing up, or clean your teeth, without doing yourself serious harm? Common sense would say that SDS was going to be very harmful in these situations, but clearly it is not. Why is left as an exercise for the student
*. Sometimes common sense only goes so far and it requires a subtler understanding of what is going on to come to the correct conclusion.
The same common sense thinking that means the layman would regard SDS as lethal if only given my description up to the pause, is the same thinking that causes overreactions to ionising radiation, non-ionising radiation (5G death waves), and the like. Common sense is great, but only when dealing with the commonplace - which for us ground dwelling monkeys is things that we've had hundreds and thousands of years to get used to. For more modern stuff it can fail us.
*Teacher/lecturer speak for "I can't be arsed to explain it to you and the thinking will be good exercise for you.".