From time to time I have the sensation of a very disgusting, sickening smell. It's mostly if I am under a lot of stress. The scent is so overwhelming that I can't eat. Even water tastes like the scent. It is kind of like bad sweat (way past perspiration) and rancid oil. It can last a few hours to a few days and I have often lost a small amount of weight because I can't make myself eat. Because my doctors can't find any other reason for it, they have said it must be my MS. Has anyone else been bothered with this?