I think I saw death (no joke). I want a scientific explanation
Years ago my little sister was choking on her food. She was coughing heavily and my mother had to pat her on the back. Because I knew it was serious I walked into the room. As I came in the room filled with darkness. It was like a dark fog falling from the ceiling with the speed of a feather that floats to the ground. The occurence lasted about 2 seconds. I guess it was over when my sister was fine again. No one but me saw it.
Sometimes I think of this and now I googled if anyone made a similar experience. I found the report of a nurse saying she saw a dark, thick rolling fog when she entered the room of a patient and she too thought it was death. She said the patient died later that day. I can link the source if wanted.
My sister is still alive. Maybe death was there because it expected to get her. If it was death. I never saw this before and never again after.
I don't know if it was death but I know that what I saw was real.
I want a scientific explanation. I was not in a panicking or scared state, just worried. My mind was clear, not under the influence of an adrenaline rush, medicine, drugs, alcohol, sickness or anything else.
Basically what Ajax said, you may have almost fainted.
Your vision went funny and your mind was clear, fainting is due to a lack of oxygen in the brain so you may not have been thinking properly, your vision also goes funny when you faint.