If you are infected with tuberculosis, you will develop serious complications rather quickly
will always have a severe cough
O may not experience symptoms until long after you were infected
will be immediately aware of your infection and become severely ill

If someone is infected with tuberculosis, he may not experience symptoms until long after being infected.

Explanation:

Tubeculosis (TB) is an infection produced by Mycobacterium tuberculosis, a Mycobacteria, causing pulmonary TB that can be treated with specific antibiotics.

Mycobacterial infection can be slow and insidious, so symptoms may not occur until long after infection. This means that despite having bacteria in the body, there may be no symptoms.

Other options that are not true about tuberculosis:

c. flammable gases, patient lying in standing water, combustible liquids near the victim