There are many reasons why people opt for a cruise ship vacation rather than a simple weekend getaway at land. Aside from parties, great food, and bonding with friends and family, one special reason is to get out of the overly polluted cities and have a breather. Unfortunately, in a secret investigation conducted by a British documentary program called Dispatches on one of the known cruise ship in the country to find out how clean the air passengers breathed when on board using an ultra-fine particle counter. It was discovered that on the deck right next to the funnel of the ship where the wind blows downward, 84,000 ultra-fine particles per cubic centimeter can be found. On the deck, right next to the funnel, the number escalated to 144,000 up to 226,000.