A new study has found no evidence to suggest that fertility affects a woman's body odor. The study, published in the journal "*Frontiers in Psychology*" tested the sweat of 30 women during different phases of their menstrual cycle, and found no significant differences in the concentration of volatile organic compounds (VOCs) - the chemicals responsible for body odor.

The study was conducted by a team of researchers from the University of Warwick, UK, and the University of New South Wales, Australia. The researchers recruited 30 women aged between 18 and 30, and collected sweat samples from them during the follicular phase (days 3-9) and the luteal phase (days 15-23) of their menstrual cycle.

The sweat samples were analyzed using a gas chromatography-mass spectrometry (GC-MS) to identify and quantify the VOCs present. The researchers found that there were no significant differences in the concentration of VOCs between the two phases of the menstrual cycle.

The researchers also found no significant correlation between the concentration of VOCs and the women's level of luteinizing hormone (LH), a hormone that surges during ovulation. This suggests that fertility does not affect a woman's body odor.

The study concluded that there is no evidence to support the claim that fertility affects a woman's body odor. This is in line with previous studies that have also found no evidence of a link between fertility and body odor.