What should a non smokers carbon monoxide reading be?

Related questions

1. What causes co2 levels to rise?
2. Does CO rise or sink?
3. Why is the carbon monoxide detector beeping?
4. What is a safe co2 level indoors?
5. What happens if co2 levels are too low?
6. What is the largest co2 contributor?
7. Should carbon monoxide detectors be installed on the ceiling?
8. What happens when your co2 levels are high?
9. What is a dangerous co2 level?
10. What is a bad co2 level?

Tags

1. #carbon
2. #ranged
3. #measured
4. #adults
5. #ambient
6. #sample
7. #being
8. #their
9. #lower
10. #breath
11. #random
12. #abstract
13. #above
14. #levels
15. #monoxide
16. #below
17. #homes
18. #smokers
19. #nonsmokers