2 ms·

The human nose is an extremely sensitive chemical detector, and should not be dismissed. It's effective down to a fraction of parts per trillion for certain che

• ClumsyPilot 4y ago
  But for others, like carbon monoxide, it is useless and leaves you to die.
  • LarryMullins 4y ago
    You can't count on your nose to warn you, but when your nose does warn you it pays to heed that warning. If your nose is screaming at you to GTFO, listen to it. You listen to your other senses, right? When you touch something hot, you listen to your sense of touch telling you that you're about to get burned. That doesn't mean your sense of touch can warn you of all hazards, but you certainly shouldn't ignore it when it does.
  • Fomite 4y ago
    That's my usual line when people talk about smell being indicative of how safe something is. Farts smell. Carbon monoxide doesn't.