Does tar block the lungs or make it hard to breathe?

Yes, tar can block the lungs and make it hard to breathe.

Tar is a sticky, thick substance that is produced when tobacco is burned. When tobacco smoke is inhaled, the tar travels into the lungs and coats the airways. Over time, this can lead to the buildup of plaque, which can obstruct the flow of air in and out of the lungs. Additionally, inhaling tar can cause inflammation and damage to the airways, which can lead to the development of chronic respiratory conditions such as emphysema and COPD.