Not necessarily. Many very intelligent people do not play chess and many people who play chess are not particularly smart.
If you ask if an average IQ of chess players is higher than an average IQ of people who do not play chess, then I do not know. You'd need to do a statistical test, which would be a waste of time and money, because who cares
First of all. Define smart.
If you mean intelligence, then what type of intelligence? Emotional,mathematical,reasoning, spatial or something else??
I hope you get where I am going...
Chess is one way to appear smart. Its not the only way. There are 1000 other ways.
You are free to choose.