If the toilet is not working, one has to go into a baggy that has ampules that can be crushed to chemically react with the waste to prevent things like offgassing and bacterialgrowth.
Cured in marble basins with salt to draw out water and protect against bacterialgrowth (herbs such as anise were added for flavor), they were put on bread and eaten as a rich source of energy for a day of hard labor.
This may be due to surgery to your stomach or small intestine (such as gastric bypass surgery), abnormal bacterialgrowth in your small intestine, or an intestinal disease, such as Crohn's disease or celiac disease, that interferes with absorption of the vitamin.