What is calitas In the Eagles' famous song Hotel California he sings the smell of calitas rising up in the air... what is it?

Calitas is reported to be spanish slang for the butt of a smoke. Pronounce "calillas". Which would make sense, on a warm desert highway. Means hes driving. Cool wind in my hair. Possible a convertable. The smell of calitas, rising up in the air. This would either mean the smell of cigarette butts or marijuana joints. Possibly coming from his ashtray.