A weird and embarrassing one: does anyone else get severe bad breath (fecal?) during a crash (and only during a crash)? Can't smell it myself, but others sure can. Doctor's eyes glaze over when I mention this. Unfortunately I can't travel during a crash so can't demonstrate by breathing on them. Excluded ketosis, reflux/GERD and dental/gum issues. Some metabolic malfunction? Or what??? Tried mouthwashes, chlorophyll, B2, activated charcoal - all to no use at all. Other ideas?