Underarm Odor Causes Find out what are the causes of underarm odor. Includes a discussion on puberty and menopause, genetic factors, damage to the brain, diet and obesity. in Public bookmarkswith causes_of_underarm_odorunderarm_odor_causeswhat_causes_underarm_odor Note: Find out what are the causes of underarm odor. Includes a discussion on puberty and menopause, genetic factors, damage to the brain, diet and obesity.