This… I feel like I must know you! There was a former Russian figure skater- she had dropped out of the “program” but she had the physique, flexibility, and strength and attractiveness still. She was in her 3rd year at a Ivy-level college when I met her. She triple majored in math, biochemistry, and ??? She was insanely bright and hot, but my god she smelled horrible. But the parade of guys through her room was like none other- and she had freshman roommates every year as they were the cheapest rooms. I had concluded it was formaldehyde and onions. You could not handle being near her without your eyes watering. But she was a competitive athlete or had been, she had to have known about good hygiene but there was no way that smell was natural unless she had a rotting abscess somewhere.
Tow things that come to mind are alcohol-withdrawal and zero-carbohydrate diets
www.cracked.com 5-things-nobody-tells-you-about-quitting-drinking
My first job involved working with Calcium carbide … when I travelled home on the bus after work I often had a strong smell of acetylene about me.