[umurkontaci]

Ohhh they have additional cabin pressure? I could swear the air quality was MUCH better after spending about 10 hours in the plane and not feeling any fatigue.

I thought the air was less dry too, but didn't really have means to measure that.

[selectodude]

It is less dry. The 787 can be held to a higher RH% because of its carbon fuselage. No worries about rust. Furthermore, it's not pressurized with engine bleed air which is very hot and dry.