WELCOME BACK TO 'TRANSIT TALES,' WHERE WE EXPLORE THE GLOBE'S FINEST UNDERGROUND EXPERIENCES!..SO, ON EUROPEAN SUBWAY STATION SCENT; AH, YES, THE SUBTLE BOUQUET OF FRESHLY BAKED CROISSANTS, PERHAPS A WHISPER OF SOPHISTICATED PERFUME. TRULY AN OLFACTORY DELIGHT, WOULDN'T YOU SAY? ABSOLUTELY! A SYMPHONY FOR THE SENSES. NOW, SWITCHING GEARS SLIGHTLY... TO PHILADELPHIA. WHAT 'SYMPHONY' MIGHT ONE ENCOUNTER THERE? WELL, IF BY 'SYMPHONY' YOU MEAN A POWERFUL, LINGERING ODE TO... LET'S CALL IT 'PUBLIC SANITATION CHALLENGES' WITH A STRONG URINE OVERTONE, THEN YES, IT'S QUITE THE IMMERSIVE EXPERIENCE. PERHAPS A BOLD, URBAN 'EAU DE TOILETTE' THEY'RE DEVELOPING? SO, FROM THE CLEAN, SAFE, WELL-LIT MARVELS OF EUROPE TO PHILLY'S... MORE 'AUTHENTIC' SUBTERRANEAN AROMA. QUITE THE SPECTRUM FOR THE DISCERNING COMMUTER, WOULDN'T YOU AGREE? INDEED. IT CERTAINLY HELPS YOU APPRECIATE THE SIMPLER THINGS IN LIFE... LIKE NOT HAVING TO HOLD YOUR BREATH.