Only one cigarette in the pack has a black filter ?! : r

why does the filter turn black? when my friends smoke it's just

Millions of Smokers at Risk for Lung Disease Without a Name

Black And Mild Apple Pack

Du maurier cigarettes hi-res stock photography and images - Alamy

Clove Cigarettes: Facts, Ingredients, Health Effects

Black And Mild Pack

10 Tips to Help You Quit Smoking

Investigation into the Presence or Absence of Solid Particles

What are these black seeds inside the cigarette filters? : r/Cigarettes

Cigarette - Wikipedia

Cigarette filter - Wikipedia

Cigarette pack - Wikipedia