Armpit odour left Side

Hi Tracy, there can be many reasons for this. Axillary malodor can start or aggravate with pregnancy, menopause, stopping of usage of hormonal contraceptives, gaining weight, intensive sports, stress, hospital stay, chemotherapy, sleeping in a dirty bed, sleeping with a new partner, moving to a new house, usage of strong disinfectants and/or high aluminum concentration antiperspirants. Many people have reported (and we also saw this based on molecular techniques) small or large odor differences between left and right axilla. Best, Chris