Quote:
Originally Posted by Lord Azagthoth
Is the tracking part of smell only viable if the scent is continuously produced by the target? Because you can still only smell things that will touch your receptors in your nose, not something that is a mile away.
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In that case it could be like using a Geiger counter to find a radioactive source. Harder, but not impossible.
Scent is unique in that it has a time component as complex odors break down and disperse over distances. It does require more processing power, but it allows estimation of distance to source if you know local recent conditions like temperature, wind, etc.