There is a sound in toilet like someone breathing. Sound is not coming from tank. It's coming from the air vent. And it's always continuous 24/7. Anyone knows what causes this I can't sleep at nights it's like someone living in my air vent.

Maybe it's some animal?
Or ghost.
How long has this been going on?

air in the vent

Have you looked inside the air vent with a flashlight? If you see a pair of eyes and teeth there, get your flame thrower and give a couple of good bursts of fire into the vent.

It's been 3 days now. I don't think it's an animal because it's a repeating sound. I mean always same rhythm.

Also, are you tenant or do you own the house/apartment, or what? Can't you ask your landlord or whoever is taking care of the property to explain or check it? Then it is not your neck in the line if some alien lifeform living in the vent pulls your landlord into the vent.

A spy sent from Gyulen. That was an easy one. OP lives in Turkey!

I own the house. It's an apartment. I already asked apartments caretaker(janitor) if he heard other peoples have the same issue and he said he didn't heard about it.

Can you show us sound sample?
It mainly happens due to air flow but I have to confirm.

I tried to record it with two different phones but none of it able to record it. It's not a high volumed sound.

Realistically speaking, is it a vent where anyone could really fit? I don't know how the plumbing and ventilation in Turkey is, but I can't imagine anyone peeking in from the air vents of my apartment. His/her shoulder width should be max 20cm or something, it isn't here like Bruce Willis crawling inside the vents in Die Hard.

It could also be some Erdogan's henchman has put some recording device in the vent, but forgot his own microphone on, so now you hear his heavy breathing. They don't necessarily like people using DRM-free products because then they can't track you. Or it could be you inside the vent. Aren't you from Greece, and you and the Turks like hate each other, ever since the dawn of the time?

From my point of view you both countries are just exotic resorts next to each other, but frankly how things are now going in both countries, I'd rather head to some other warm country. I usually go all the way to Thailand anyway, if I go abroad for a vacation. Except that one time last summer when I actually went up to northern Norway, it was quite nice there but damn it was EXPENSIVE.

No? First of all, not all nations and/or countries were around since the dawn of time, or civilization, so this you wrote, at least in the words you put it in, makes no sense. Second, i don't hate neighbors; unless they damage my property somehow. For the time being, all is good.

But how did you ever think i would visit Turkey, in such turbulent times too?

About Thailand, i would gladly visit, but authorities lately removed a large portion of a mainstream, unique tourist attraction, so i now have less than zero reason to go. About Norway, i love northerners, i would gladly go. The only reason i didn't, is exactly that which you mentioned... EXPENSIVE!

You are WISE to keep away from both us and turkey right now, though. Because RAPEFUGEES. People in islands already started forming civilian militia teams, their houses have been robbed dry, continually and are completely unprotected from state and police! Of course, with such wonderful "cultural enrichment" we received and endlessly circulates between turkey and us this time of the year, being robbed has to be the most enjoyable experience (considering alternatives) of interacting with them...

Lol you might be right but vents are small for a human size it's not like in the movies or the games. You can be right about spy. Maybe not a human spy but a cat spy or something.

I still like Turkey's internet policy even with social media blocks during bombs, coup attemps. Because I can still use torrent without a vpn or vps.I heard USA and Eu is so strict about it.

And don't think to visit Turkey it's literally a shithole now.

Fart a lot. The farts will move the oxygen away and if there's some kind of intruder in the air vent, he will suffocate, thus disabling him.

This is better than other methods because it works if the attacker has a pointed stick as well as a banana.

But never forget, if the attacker has raspberies, release the tiger!

I think you have a Darth Vader in your air vent! :O