pulmonary tb in the lungs is contagious it spreads when a person who has active tb breathes out air that has the tb bacteria in it and then another person breathes in the bacteria from the air an infected person releases even more bacteria when he or she does things like cough or laugh
An ideal bowel movement is medium brown, the color of plain cardboard. Stool that is pale or grey may be caused by insufficient bile output due to conditions such as gallstones, hepatitis, chronic pancreatitis, or cirrhosis. Bile salts from the liver give stool its brownish color.
Some people who have a high quantity of greens in their diet may pass poop that has a green color too. Having green poop isn't usually a cause for concern. It is important for people to keep an eye on both the color and the texture of their stool, however.