How far animals can detect human scent- graph

When hunting big game, I "never" play the wind. The only time I play the wind is goose hunting; wind in my back, decoys out front equals cupped wings on arrival.
 
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I once read that some special ops guys going into the jungle where they could be close to the enemy would stop brushing their teeth 2 weeks ahead of time because the opposition could smell the toothpaste quite a long way away. Something I certainly would never have thought about!
Yes, the men on both sides have stated they could often use the unique smells of those on the other side when operating. MACV-SOG operators would also start using popular Vietnamese seasonings in their food too, and take them with them. I suggest that sceptics of animals' ability to sense smells keep an open mind about them and realise how it works- it's carried downwind on air currents and does not broadcast in a circle like say sound does.
 
I never wash my hunting gear I let the rain take care of it. I dont have a sense of smell but my wife can detect i smoked a cigar on a Friday night when I get home Sunday afternoon
I've shot mature bucks while smoking a cigar and half hung over covered in stripper glitter from the bar. I've shot mature bucks while eating smoked sausage in the bush. I've also seen deer cross my tracks in a field that were 7 hours old and turn and run the opposite direction.
Im a firm believer in theyre always going to smell you. Its whether they care that day or not that matters
Wind in duck and goose hunting is vital. Same with calling wolves
 
I suggest that sceptics of animals' ability to sense smells keep an open mind about them and realise how it works- it's carried downwind on air currents and does not broadcast in a circle like say sound does.
The skepticism comes from the seemingly arbitrary numbers and sloppy chart, not the actual abilities of the animals in question. Most people who hunt have seen coyotes or deer hit their scent and turn tail.

Here's the real issue: If you Google this you'll see there is a bunch of these pictures floating around, the numbers vary wildly, and most of them are coming from Facebook or Instagram - not exactly trustworthy sources for scientific data.

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I’d like to know how this research was conducted and how the researchers determined that the animal could in fact smell the person.
Personally I don’t think it’s factual.

I’ve had deer walk to within 3 feet of me sitting under a pine tree…and I agree with brybenn that “smelling” you and “being alarmed by the smell” are not the same thing.
 
I once read that some special ops guys going into the jungle where they could be close to the enemy would stop brushing their teeth 2 weeks ahead of time because the opposition could smell the toothpaste quite a long way away. Something I certainly would never have thought about!
Years ago, when I was in the army and did basic training on a island. We would take a ride on a Landing craft to go back to the main land on weekend.
My dad will come and pick me at the jetty and he said he always knew when the landing craft is getting near, the pungent smell of a whole company of men that had not wash properly for a whole week will get to the jetty way before the landing craft get near.
 
The scepticism comes from the fact that this graph can be made up by anyone with AI nowadays ... and that this graph is presented without any supporting scientific data.

I can create a similar chart with fictional numbers in 5 min.

The question is .... what scientific studies are there and that back up this claim?

What is the supporting data from which this chart was derived?

Just because there is a graph out there on social media ..... does not mean that these numbers are true or correct.
 
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