The Eagles are not saying 'colitas'. They are saying "Goleta's" - a town on the Southern California coast "The warm smell of Goleta's rising in the air".
Don't believe everything you read on lyrics websites.
per wikipedia: Goleta ( /ɡəˈliːtə/; Spanish: ɡoˈleta, "schooner") is a city in southern Santa Barbara County, California, USA. It was incorporated as a city in 2002, after a long period as the largest unincorporated, populated area in the county. As of the 2000 census, the Census-designated place (CDP) had a total population of 55,204, however, a significant portion of the census territory of 2000 did not incorporate into the new city. The population was 29,888 at the 2010 census.
It is known for being near the University of California, Santa Barbara campus, although the CDP of Isla Vista is closer.
The warm smell of Goleta's rising in the air. Not 'colitas'