Alright guys I believe I'm experienced enough to come to the following conclusions, as I've sniffed about 30-40 different women's feet in the past.

First. Let's talk odour strength (yes, there's a "u" I'm Australian lol). Now, obviously female foot odour strength can differ by woman, but all so far have had the same odour strength in each location. I have found the toes area on their soles, in between the ball of the foot and toes, closer to the pinky toe, retains the strongest smell, especially noticeable if you spread their toes and stick your nose right in. Following by is the top of their toes (close to toenails) this produces a pretty strong smell too. 3rd strongest smell imo, the heels (cause ya know, a real man sniffs the whole foot lol). After that comes the ball of the foot, mainly closer to the pinky toe and finally, beneath the arch (most of the time there's no smell).

Now that we covered that. Let's talk types of odours in each location. I found most had a vinegary, very sour cheddar cheese type smell between their toes, especially closer to the pinky toe. Their toenails area slightly cheesy. The ball of the foot earthy and their heels just very sour. It's different to the smell of their socks, which I can best describe as a mix of popcorn, doritos corn chips and ammonia.

So that's what I think lads tell me what you think.