Old people smell....Nonenal;
https://www.agingcare.com/articles/old-person-smell-174839.htm
“According to a study published by the Journal of Investigative Dermatology, an increase of nonenal is directly associated with aging. Nonenal is a chemical compound that is produced when omega-7 unsaturated fatty acids on the skin are degraded through oxidation. Around age 40 in both men and women, the skin begins producing more fatty acids its natural antioxidant defenses begin to deteriorate. Hormonal changes like menopause can contribute to this chemical process as well.”
“Just like traditional body odor, following a healthy lifestyle can help to minimize nonenal. This includes exercising regularly, avoiding stress, abstaining from smoking, drinking alcohol in moderation, eating a clean diet, drinking plenty of water and getting enough rest.”
There you go! All she needs to do is stop drinking! (Sure...)
Q