because to clog it
At Parrot Port, the "vent" is the chimney on the roof of Petey's Pirate Pub.
It's on top of the pub (on the chimney).
YOURSELF! Stand on it long enough to satisfy the parrot
The one on top of the pub on Parrot Port. You jump on the vent to clog it (partly block the smoke). The parrot is on the palm tree at far right.
There is smoke coming from the chimney atop Petey's Pub. Stand on the cover there for a minute to partly block the smoke. Then the parrot can be found in the palm tree to the far right.
There is no vent room on Cryptids Island. There are vents on 24 Carrot Island.
There is a vent available for this. It is meant to cap 1 1/2 PVC. T the drain and put the vent as high as you can. It is spring loaded and the water will pull the vent open and close when the pressure equalizes. This is only for a single sink. If using a double sink, one side uses the other for the vent. You can use the add on with a double, you just don't have to.
On The Spy Island!
no no no no
the factory, get the crowbar to open the vent
You need the cracker from Petey's Pirate Pub. It is at the upper left inside. Before you give it to the parrot you have to complete his challenges (jump in the sea, clog the vent). When he tells you to talk to the pirate, go to the tower then use the cracker (your character yells "Polly wanna cracker?"). The pirate gives you the map piece and both disappear when you leave the island.
After you first meet the parrot, he wants you to jump into the sea and then find him again, and he is on a window above the Trading Post. Now he will say "clog the vent and see where I went". Jump atop the ash cover on the chimney of Petey's Pub, which will partly block the smoke. Now the parrot is at the palm tree at the far right. (see related question)