so are pheromones, but dogs detect those very easily. just because you can't smell it doesn't mean they can't.
dogs can probably detect compounds in the hundred nanomolar regime; but they generally aren't trained to sniff out blotter.
Thank you very much. That was the answer I was looking (and hoping) for. I already took into account that just because humans can't smell it doesn't make it odorless, and also that the dogs aren't trained to sniff it out, but I just wanted that confirmation, so thanks.
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