8:10 AM Completely silent upstairs now but when i went in the bathroom @6:30 a Niagara Falls sound (water flowing a few seconds through the faucet in the empty tub, "to warm the pipe") and then more silent shower combined with a chocking smoke coming from outside triggered a whole anxiety episode.

When that type of smoke or others are present, there is never noise upstairs.

I don't usually hear that sound in the morning and generally lately. It caught me by complete surprise. 
But there was no surprise to me they knew when i went at the bathroom as they know all the time where i am and what i am doing, following me many times throughout the apartment with synched noises.

Could have been retaliation because i started earlier the washer a few seconds and then shut it down thinking it was too noisy too early. But it was during the time of noisy stumps in the morning though today it was silent though someone still left shortly after like usual.

I am now using a mask inside, trying to catch my breath. It feels like i'm breathing through my brain, and my lungs are never filled enough.
 
Lately they put loud TV if our TV sound setting is above 3 (out of 50) after 10 PM. It is true, it can be heard upstairs even at this low volume because these apartments are not sound proof. (Though they never talk to each other, in any language).