Even if humans could gather this information, our brains wouldn't know what to do with it:
the dog olfactory cortex, which processes scent information, takes up 12.5 per cent of their total brain mass, while ours accounts for less than 1 per cent.
The brain of a human is dominated by the visual
cortex, but the brain of a
dog is controlled by the smell or
olfactory cortex, which is approximately 40 times larger than that of a human.