If it looks like an ashtray, smells like an ashtray....then it Must be an ashtray!
This place seriously needs a renovation. The chairs are dirty, the gambling chips are dirty, the carpet has pretty much soaked up all the years of cigarette and cigar smoke as a filter.
Ventilation sucks as well. You can just feel and sense the dirty microbes in the air quality.
Go back and spend your time in the Golden Nugget, next door.