It sounds to me that what you are describing is known as olfactory fatigue. A new smell will become ‘normalised’ after a few moments, and you’re unable to disti

It sounds to me that what you are describing is known as olfactory fatigue. A new smell will become ‘normalised’ after a few moments, and you’re unable to distinguish it any longer. That would not work in the scenario that you described since the scent of the candle would be ‘new’ in the context of the normalised home environment. https://en.wikipedia.org/wiki/Olfactory_fatigue https://en.wikipedia.org/wiki/Olfactory_fatigue