Definition
Smoke produced by burning tobacco, which contains carbon monoxide and other compounds that reduce the blood's ability to carry oxygen. In the aviation context, tobacco smoke is treated as a source of carbon monoxide exposure that compounds the hypoxia risk pilots already face at altitude.
Plain English
The smoke from cigarettes, cigars, or pipes. It puts carbon monoxide into the body, which means less oxygen reaches the brain and tissues — a problem that gets worse the higher you fly.
Context Anchor
Seen in pilot health and carbon monoxide poisoning discussions, especially when considering smoking before or during flight.
Why Pilots Care
Smoking introduces a controllable source of carbon monoxide that can silently degrade pilot performance and judgment.
Grounding Statement
If a pilot smokes before a flight, the body may already be carrying less usable oxygen when the climb begins.
Intuition Check
Do not think of tobacco smoke as only a smell or lung irritant. In this context, the key issue is that it can add carbon monoxide to the blood and reduce oxygen available to the body.
Example Sentence 1
Because tobacco smoke introduces carbon monoxide into the bloodstream, a pilot who smokes may experience hypoxia symptoms at lower altitudes than a non-smoker.
Example Sentence 2
During the postflight review the instructor noted that even brief exposure to tobacco smoke could raise CO detector readings.