need help for chi-squared test

I used chisq.test(read.table("C:/Users/Maggy/Downloads/dust.asc",
header=TRUE))

and got this



        Pearson's Chi-squared test

data:  read.table("C:/Users/Maggy/Downloads/dust.asc", header = TRUE) 
X-squared = 5226.164, df = 3735, p-value < 2.2e-16

and I think it should be right for the whole set, but that's not what I
need, because I only have to use it for "cbr" and "smoking"

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