I guess. When I was really poor, I rolled my own cigarettes. And when I finished one, I kept the tobacco in a small plastic bag. As backup, for when I was too poor to buy more.

You may say "yuck". But trust me, good tobacco the second time around is better than the stuff in those nasty папироса.

Even if that is true, it is more likely the result of poverty being inherently stressful and requiring the use of cognitive resources rich people can spend on other things (https://zhaolab.psych.ubc.ca/pdfs/Zhao_2013_Science.pdf)