Sound plays for no reason (even after being deleted)

[Kartaply]

For about a minute the sound and attenuation works as it should, but after some time (~85 seconds) the sound starts playing with 100% volume, no matter where I am. After ~10 seconds it stops.

I have that simple code inside of a character:

With a sound and attenuation in audio component:

What I noticed by trying to solve that kind of magic:

1. The sound plays no matter what. I even tried to delete it, fix up associated redirectors, change sound to another, delete the code, character, it just didn’t work.
2. I used breakpoints in my level to find what is causing that event and it led me to some ‘begin overlap TriggerVolume’ that has nothing in common with my magic code. I tried to delete that node and see what is going to be, but it just escaped to another similar node that I haven’t deleted before

What do you think the issue could be with?
Thanks in advance

[Kartaply]

UPD: To others who also wonder what was the reason:

My inattention. The ‘bugged’ sound also was the part of another sound, that I simply forgot to divide into parts. What is the reason of level events to be trigger is still unknown though, but it didn’t interfere the gameplay, so I would prefer to forget about it