Something rotten in air -- but what? February 28, 2005 BY ABDON M. PALLASCH Staff Reporter The City of Big Odors lived up to its name Sunday as Chicagoans woke up, opened their doors and smelled something rotten. An invisible cloud of ... well, who-knows-what wafted across the city starting about 2 a.m. Sunday. Was it from the fire at BP Amoco's Whiting, Ind., plant Saturday afternoon? BP officials say that was not the cause of the smell. Winds of 10 to 15 mph out of the southeast gradually blew the stench through Chicago, up to northwest suburbs such as...