A380 BLEED AIR
Hi Dreambuster
Hope the following helps
The Airbus A380 uses the standard bleed air system design.
However the Boeing B787 is going to be BLEED FREE
In the past the B707, DC8, Comet, VC10 did not allow the bleed air (bleed air is the air supply from the engines for the passenger cabin) to directly enter the cabin and used compressors etc...
The late 60s early 70s saw the introduction of the current bleed air technology but as smoking was present until the later part of the last century, people were slow to pick up on the contaminated air issue.
First contaminated air reports we have on file date to late 70s early 80s
Although the technology is there, virtually no current airliner has any filtration system to remove contaminants in the bleed air supply. If the bleed air becomes contaminated then passengers and crews WILL be exposed.