There are two key words here: cotton swabs, "earwax".
Let's start with earwax. Some places call earwax "earworms" or "earwax", but it actually has a specialized name in Western medicine. But it actually has a specialized name in Western medicine, which is "external ear canal cerumen". So, is this commonly known as "earwax" really just waste? Of course not, as you would know from the fact that it has a real medical name, it must have other "wonderful" uses. First of all, it is secreted by the cerumen glands on the skin of the cartilage of the external auditory canal, which is acidic and to some extent oily, so that the "earwax" is not only able to stick to the dust in the air and some small insects, but also effective in preventing bacteria and microorganisms from growing in the ear canal.
Some people may say, "Don't you have to remove the stuck dust and even small insects regularly?" The advice here is not to pull out the earwax yourself, because "earwax" is used to protect the ear, and if you don't pull out the earwax in the right way, it can easily damage the ear, and even cause an infection inside the ear. This is especially true for the elderly, who are obviously old enough to be blind, and who, out of love for their children and grandchildren, regularly use their fingernails, steel hairpins, ear spoons, or even cotton swabs to help their children deal with earwax on a regular basis, which is incorrect. What should be done is to let the ear work on its own. When there is enough "dirt" in the ear, the "earwax" will naturally harden and may fall out of the ear the moment you yawn or cough. Of course, you don't have to worry, as the new "cerumen" will then be secreted from the cerumen glands as well. All you have to do is to follow this rule, but if you really have a hard time with it, then I suggest you go to an ear, nose and throat specialist hospital and get professional help!
As for why cotton swab swabs for ears are unhealthy? Before answering, let's take a look at Figure 1 in the ear, you can clearly see the white circle in the yellow part is what we mentioned above "cerumen" that is, we commonly known as "cerumen" . Strong>"earwax", and the swab looks like the one we're holding in the second picture, which may have one or two heads, but it doesn't matter. What's important is that it has a rounded head, and when you use the rounded swab to "pass" the ear, you'll feel as if the ear is clear, but in fact you're not "sticking out" the whole "earwax", but rather you're "sticking out" the "earwax". But in fact, you didn't "stick" the earwax out, you pushed it in. What's most likely happening is that you're complicating a problem that the ear could have solved through its own "metabolism". Here we have to say that the consequence of this stabbing is that the earwax enters deeper into the ear canal, and over time it not only affects the hearing, but may even take root there, eventually leading to infection!