This is the 11895th most frequent Spanish word.
humos
"Humos" means "smoke" or "fumes" in English.
In this sentence, 'humos' is used in its literal sense to refer to fumes or smoke originating from a factory or other source.
Los humos de la fábrica contaminaban el aire.
The factory's fumes were polluting the air.
Here, 'humos' is used metaphorically in the idiomatic expression 'se le subieron los humos a la cabeza,' meaning someone became arrogant or conceited.
Después del éxito de la película, se le subieron los humos a la cabeza.
After the film's success, it went to his head.
This usage of 'humos' is once again literal, referring to the smoke generated during cooking on a barbecue.