[NorthMountain]

100% pure dry nitrogen, inhaled, is absolutely lethal. It’s also dirt cheap and non-toxic.

[Born to Conserve]

“100% pure dry nitrogen, inhaled, is absolutely lethal. It’s also dirt cheap and non-toxic.”

Why dry? Dry air will cause irritation, coughing, etc. Makes no sense to specify “dry”. It does make sense to humidify the gas to a comfortable level.

[cynwoody]

100% pure dry nitrogen, inhaled, is absolutely lethal. It’s also dirt cheap and non-toxic.

Yep. NASA has long ago done the research.