Bottled air

[discovery1]

O2 creates free radicals and therefore increases aging, higher risk of cancer etc. Also breathing pure oxygen for long enough makes you mad and stuff. Great fun.

Just like alcohol then.

Wouldn't breathing pure O2 also eat your lungs. Oxygen is after all rather reactive.

[Hosakawa Tito]

Reminds me of the gimmick when one vists Niagara Falls. Some of the gift shops sell little bottles of "Water that has gone over the Falls". I can just imagine some guy in the back of the shop filling these little bottles from the tap. A sucker born every minute.