bob dylan smoking cigarette Portrait, Smoke Screen, NYC, 1965 bob dylan cigarette poster smoking.

And a "statistically significant increase in the incidence of lung cancer has been reported in several studies of chronically exposed workers." The EPA classifies acrylonitrile as a "probable human carcinogen." Naphthalene, which is used in mothballs, can cause "headache, nausea, vomiting, diarrhea, malaise, confusion, anemia, jaundice, convulsions, and coma," according to the EPA

This is where many people begin to push back

Does a failed drug test show up on a background check

So after finding nothing there, I found this following link that explained everything

After cleaning your walls, prime them with a good odor-blocking primer and sealer

My kids have noticed too