You say the second one had just showered but she must have not washed as BO only happens when sweat dries and becomes stale. Fresh sweat on a clean body does not smell. There is rarely an excuse for BO unless you are working out, running,cycling etc. never an excuse to smell during a booking as if freshly showered the sweat would not have had time to dry and become stale enough to smell plus most women prossies and civvies apply a liberal amount of anti persperant once out of the shower and dry so again if freshly showered she wouldn't smell of anything bar her a to persperant, body lotion and maybe perfume