I studied hold a Diploma of Western Herbal Medicine as issued in Australia.
The other commenter is likely correct about something you aren't (or are) metabolising.
One herb that can be intentionally used and also has this affect (peculiar body odour) if Fenugreek. Are you typically eating much of this?
For interest and discussion I'll paste in my notes on Fenugreek:
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Fenugreek - scientific name Trigonellafoenum-graecum - Year 2 Term 1 Week 1 Cardiovascular System Continued
Fenugreek has a very broad and often under appreciated action including mucus dissolver, digestive tonic, nutritive in convalescence, lowering of blood glucose levels, galactogogue, anti-inflammatory, lymphatic decongestant and liver tonic. The liver tonic action is specifically helpful in improving liver fat metabolism and via this action Fenugreek assists in the lowering of cholesterol levels.
The colour of Fenugreek extract is similar to bile (doctrine of signatures) and although Fenugreek is only a very mild cholagogue it is well indicated in the patient with bile deficiency and raised blood cholesterol because it improves the liver's fat metabolism. A subset of patients with raised blood cholesterol have the problem due mainly to blood sugar disorders (typically hyperinsulinaemia for many years followed by exhaustion of the pancreas and relative insulin lack and or the development of insulin resistance. When the pancreas is exhausted and fails to secrete sufficient insulin levels to meet the bodies needs or when insulin resistance begins the patient has type 2 diabetes.) In all these stages of blood sugar dysregulation Fenugreek is well indicated to assist in controlling high blood glucose levels and to act as a liver tonic and cholesterol lowering agent. About 50% of all patients with raised blood cholesterol will have blood sugar dysregulation as part of the aetiology. The lymphatic system is also involved in fat metabolism and Fenugreek will improve the lymphatic involvement in cholesterol and lipid metabolism. Summary - Fenugreek is mainly indicated in raised blood cholesterol with bile deficient liver disorder, blood sugar regulation disorder or lymphatic circulatory congestion. The liver and lymphatic aspects are well illustrated in the iris analysis of high cholesterol patients with the characteristic yellow deposits over liver, gall bladder, lymphatic rosary and lymphatic overlay. Light coloured stools, digestive intolerance to fatty foods and erratic blood glucose levels are also indicators for Fenugreek in raised blood cholesterol. Fenugreek also has an empirical use to improve overall lipid metabolism and to act as a blood vessel detoxifier which will assist in the dissolving of atheroma deposits in the artery walls. This action is indicated in coronary artery atherosclerosis and in carotid artery atherosclerosis which has a propensity to lead to stroke when deposits dislodge from the carotid atheroma and are transported to the brain. The majority of these patients are current or past cigarette smokers who would not have developed the carotid artery disease if they has not smoked. Fenugreek tea (short decoction) is mildly active in improving liver, cholesterol, atheroma etc but the main preparation needed in these conditions is an extract 1: 1 or 1:2 taken over many months and years. The most commonly used CV combinations utilising Fenugreek are; raised blood cholesterol with liver dysfunction and bile deficiency - Fenugreek with Fringe Tree, Dandelion Root, Globe Artichoke, St Mary's Thistle (and usually Guggal Guggal / Garlic capsules) ; raised blood cholesterol with blood sugar disorder / elevated blood glucose Fenugreek with Goats Rue, Gymnea, Fringe Tree (and usually Guggal Guggal / Garlic capsules) ; raised blood cholesterol with marked lymphatic congestion Fenugreek
with Echinacea angustifolia, Clivers (and usually Guggal Guggal / Garlic capsules). Refer to Year 1 Term 2 Week 1 Hepatics for more information of Fenugreek.
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My notes go on further but comment length here is restrictive.
Definitely interested in what the HN community has to say about this sort of information.