Dr Jane Hill, one of the US scientists from the University of Vermont, said:
Traditional methods employed to diagnose bacterial infections of the lung require the collection of a sample that is then used to grow bacteria.
The isolated colony of bacteria is then biochemically tested to classify it and to see how resistant it is to antibiotics.
This whole process can take days for some of the common bacteria and even weeks for the causative agent for tuberculosis.
Breath analysis would reduce the time-to-diagnosis to just minutes.
More top news
Jeremy Corbyn is facing increased pressure to resign as Labour leader.
A group of schoolchildren who went missing in the Brecon Beacons are being brought back to safety by rescue teams.
Another unsettled day with cloud, rain and blustery winds.