No. The tank that can hold enough nitrogen (or helium or argon--same volume means the same pressure which means effectively the same weight) to do the job reliably is heavy. By the time your health is such that you would choose that path you likely can't lift it. I have seen my wife struggle with lifting that weight when it's in a form meant to be lifted. I've seen her fail when it wasn't as cooperative.
Too bad, I guess that leaves out the "use disproportionately large amounts of the agent to hotbox the room" method. But that doesn't invalidate the point of the parent comment.
The have a volume in cubic feet specified, multiply by the 165 bar that's what's typically used to see how much space it will fill. Looking around our house there's a very odd-shaped closet under the stairs that would be difficult to measure. Of the more typical places the smallest room in the house is a closet. 6' x 5' (minus a 1' x 1' chunk that I believe contains an air duct) x 8' = 232 cubic feet. Suppose you dump 232 cubic feet of material into it--you'll displace half the air which gives a time of useful consciousness of 20-30 minutes. Not good enough. Let's try doubling that, now we end up with a time of useful consciousness of 30-60 seconds. That's probably enough. That's 2 cylinders at 137 pounds each. Or if you use aluminum, 3 cylinders of 90 pounds each.
