Yep I failed.
The baking powder was not in a container in a bag but rather in the bag itself; It was a pain in the ass to squeeze the air out of the bag and put it over my head especially with the citric acid container still in it and I most likely didnt do it right. I dont know what caused me to take the bag off, I guess my SI is way stronger than I realized or it was the burning feeling I felt in my nose, I dont know if that one came then or later. I took the bag off my head and accidentally released some (or maybe all) of the CO2, I waited until the skinny bin bag inflated and stuck my head in it and oh god the pain was unbearable, it wasnt like I was sucked of air but rather if someone stuck a lighter up my nose, I even used a scarf on my face to filter it out but it only made it worse.
The burning smell was carbonic acid for anyone wondering, I dont know how one would filter it out. /edit: Turns out citric acid + baking soda creates only sodium citrate, water and carbon dioxide, I have no idea what caused the burning smell, does CO2 do that?
I am very disappointed because I was planning on dying before christmas :c, I guess I can't let that happen could I?
I'm just going to get SN I guess
edit: I dont know if it went wrong because my citric acid solution wasnt clear/good or if that's what is supposed to happen. I'm too much of a pussy to redo it especially when family are coming over for Christmas, if it's the latter then that japanese dude must have had balls to carry this one out