Originally Posted by pittsburghracer
Then again you could fly in a plane and breath recycled air for five hours.


I agree, but reports are it is "filtered" ( whatever that means?), "turned over" every 3 minutes, and it is rather "dry" ( not a great petri dish environment), which is certainly better then breathing moist ocean air at 20?knots on your open balcony downwind of 1,000 other open occupied balcony/cabins.

Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.