What is a safe co2 level indoors?

Related questions

1. What level of carbon monoxide sets off an alarm?
2. At what ppm do CO detectors go off?
3. Is drinking carbon dioxide bad for you?
4. Why is high oxygen bad for COPD?
5. What is a dangerous co2 level?
6. What is a bad co2 level?
7. What is dangerous level of carbon monoxide?
8. Does CO rise or sink?
9. What is the current ppm of co2 in the atmosphere?
10. How many ppm co2 is dangerous?

Tags

1. #suggesting
2. #indoor
3. #health
4. #occupational
5. #level
6. #whereas
7. #levels
8. #ventilation
9. #dioxide
10. #outdoor
11. #inadequate
12. #considers
13. #marker
14. #institute
15. #exceed
16. #national
17. #usually
18. #safety
19. #acceptable
20. #considered
21. #carbon
22. #niosh
23. #maximum
24. #concentrations