What is Invisible?

I am not afraid of you when you are strong, I am afraid of you when you are weak. In strength you will respond. In weakness you will react.
I am not afraid of me when I am strong, I am afraid of me when I am weak. In strength I will respond. In weakness I will react.
Deep breath, shallow breath…
I can not see your presence. I can see your body breathing.
I felt something but I did not see it. I wanted to see a feeling. This is where I got lost. I wanted to touch a feeling, instead of feeling. I wanted to describe a feeling, instead of feeling.
The moment I name a feeling, I do not feel it. It is now in my mind, not in my body. I reacted.
Unfelt.
Analysed.
Why are sound, smell, or taste able to bring me back to a place where I felt something?
Words. Language.
Triggers.
Invisible.