Occasionally, an overactive thyroid can also cause body odor. This is because the patient tends to sweat excessively due to the hyper-functioning thyroid gland. This condition can also be ruled out by physical examination and blood studies.

Can hypothyroidism make you smell bad?

Individuals who suffer from hypothyroidism often smell and taste foods in a different way than they normally would.

Can hyperthyroidism cause body odor?

Internal health issues may result in unpleasant body odors (BO), as well, such as liver and kidney disease and hyperthyroidism, which can lead to excessive sweat and increased BO. Stagg recommends talking with your doctor if you notice a strong smell from your skin.