It’s a common observation for many air travelers, whether seasoned flyers or occasional vacationers: nestled somewhere onboard, often in or near the lavatory, sits an ashtray. This small feature might seem like a curious relic from a bygone era, especially given the strict, universally enforced bans on smoking during flights that have been in place for decades. The lingering presence of these ashtrays sparks a natural question: if lighting up mid-flight is strictly forbidden and carries hefty penalties, why do even brand-new airplanes still come equipped with them? The answer lies not in condoning smoking, but firmly in the realm of passenger safety and regulatory foresight.