eccrine

The product of apocrine glands has more odor when broken down by bacteria than eccrine gland sweat.

Humans have two types of sweat glands: eccrine and apocrine.

The eccrine and apocrine systems are fascinating.

Only the Eccrine glands sweat contains it.

You may be interested to know that your sweat glands come in two distinct types: Eccrine for thermoregulation and Apocrine for the wild mess of emotions we experience.

With your anecdote you've mostly described the difference between apocrine and eccrine sweat glands, their locations, and their effect, with the former generally causing the noticeable odour from bacterial enzymes breaking their secretion.

I have a genetic defect where I don't produce apocrine sweat (the kind that causes bacteria to produce odor) but still maintain the eccrine sweat that cools me down.

But because it is much richer in nutrients than the sweat produced from the eccrine glands (which is 99% water and the last 1% mainly being salts), it is a fertile feeding ground for bacteria.

) points out that mosquitoes home in on lactic acid, which is produced by non-odour-causing eccrine sweat glands, which explains why there is actually no correlation between human-perceptible body odour and mosquito attractiveness.

And they secrete different stuff: "Eccrine sweat is clear, odorless, and is composed of 98–99% water; it also contains NaCl, fatty acids, lactic acid, citric acid, ascorbic acid, urea, and uric acid.

Eccrine sweat glands are found all over the body.

Eccrine sweat glands go directly to the surface of the skin (secrete: water, NaCl, K), while apocrine sweat glands connect into hair follicle (secrete: protein, lipids,): the bacteria feed off the latter.