If we could breathe the best air ever, what would it be made up of?

Question: If we could breathe the best air ever, what would it be made up of?
- Keywords:
  air,
  breathe
Asked by Desmond to Áine on 18 Nov 2014.
- Áine Broderick answered on 18 Nov 2014:
  
  The best air would have little to no pollutants in it, but that is very hard to find. Ireland has very good air quality

Question: If we could breathe the best air ever, what would it be made up of?