how fire gets glowing when we blow carbondioxide(fire extinguisher) from the mouth?

Question

carbondioxide is a fire extinguisher. but when we blow in front of fire which is going to put off it suddenly gets glowing. how it is possible

Answer 1

youre not exhaling pure co2, plus youre moving atmospheric air.

Answer 2

The air you breathe out still contains plenty of oxygen. There's about 20% in normal air, and about 17% in exhaled air. So still plenty to encourage a fire, or to resuscitate someone who has stopped breathing. Carbon dioxide doesn't in itself extinguish a fire, a CO2 extinguisher works simply by excluding oxygen, which could equally be done with many other gases such as nitrogen.