You should get out of a manhole as soon as you start feeling

• A. Thirsty.
• B. Sick to your stomach.
• C. Like sneezing.
• D. Dirty.

Answer: (B)

In confined spaces like manholes, hazardous gases and low oxygen can build up quickly, and your body may warn you with symptoms before you realize the danger. Feeling sick to your stomach is a sign that you’re being affected by the conditions inside, such as gas exposure or reduced oxygen, and continuing to stay in the space increases the risk of fainting or worse. The safest move is to exit immediately to fresh air and wait for proper ventilation and gas testing before reentry. Thirst, sneezing, or feeling dirty aren’t reliable indicators of an immediate life-threatening condition in this context.