well, the science behind feeling out of breath is CO2 being pumped into lungs from blood, lol

Years ago when I was in a bad place in life I attempted suicide using a tank of nitrogen and an oven bag. Thankfully I was stupid as hell and didn’t tie the bag properly or something. So when I passed out the bag managed to come off somehow. Still not entirely sure how it happened but either way I’m thankful it did and I managed to survive for better days.

Anyways, Im telling you this to let you know I can very much confirm that breathing nitrogen is painless and was no different than regular breathing.

Your body only starts the alarm bells when it can’t exchange out the co2 in your lungs. It can’t really tell the difference between pure nitrogen and some other gases coming in vs the optimal mixture we need to breath. So the alarms never really go off. There’s more to the science behind it, but it’s kind of a glaring flaw evolution left in our bodys survival system that can be taken advantage of including for use in anesthetic.

I’ve been in a high altitude simulation chamber to experience hypoxia after rapid decompression. 💯 didn’t give a fuck, was a bit giddy, and if left there long enough with dwindling oxygen would have for sure died. No problem taking a breath.

So in effect, yes tried it.

I have, sort of. I’ve worked HazMat most of my life. One of the jobs I had years ago involved neutralizing a large pit of acid. It was just a huge pit in the ground with a roof over it. From the outside, it just looked like someone had pulled the roof off of a house and set on the ground. There were only two openings, one at either end, so it was completely enclosed. The method here was to send the two youngest (and therefore invincible) guys into the pit with acid suits and full faced respirators, with buckets of soda ash, we walk around in it and stirred it up while we sprinkled the ash around. Safety standards back then were not what they are today. Anyway, the people in charge realized that there would be a reaction with gases betting released, hence the respirators, but no one considered the possibility that the gases might be heavier than oxygen. Which they were. We didn’t know what kind of acid it was but this was an old fertilizer plant, so probably nitric. Which means the gas was most likely nitrogen. Whatever the case, we got into trouble when we realized that we were both getting rather lightheaded. We tried to leave, but the only way out was up a ladder and by the time we got to it the other guy, we’ll call him Rick, could only get about half way up before he just couldn’t move anymore, which left me leaning on the ladder at the bottom, completely unable to help, as I was in the same state. Luckily, our foreman was a lunatic and he jumped in and pulled us out. You are absolutely not supposed to do that because you are just as likely to end up in the same trouble as the guys you’re trying to save.

The experience with the gas was not unpleasant. I should have been terrified, but was mostly just mildly concerned. The only real effects I remember feeling are the lightheadedness and being really sleepy.