17 ms·

Air quality in this context is not about smells or the sterility of the air, but simply just about the oxygen level.

• Gordonjcp 4y ago
  Maybe your house shouldn't be a sealed plastic bubble.
  • degif 4y ago
    Oh my house is pretty well passively ventilated. Not sure what has my house to do with the fact that lighting a candle consumes oxygen though.