Air date: September 12th, 2007 (UK), November 10th, 2007 (US)
Thomas is shunting at the coaling plant with Diesel, 'Arry and Bert, and each of them call each other '"stinky." The Fat Controller gives Thomas the job of going to The Dairy for a delivery. Not knowing what it is, Thomas is just happy to be away from the diesels. However, when he arrives, he is disgusted to find that his truck is loaded with stinky cheese. The dairy foreman informs Thomas that he must take it to Brendam Docks before the ship leaves. Thomas reluctantly agrees.
On the way, Thomas sees Diesel at a junction, and gets worried he will tell everyone how stinky he is. Not wanting to pass him, he goes the other direction, despite a signalman's warning. He thinks nobody will smell him, until he sees 'Arry in a siding. Dismayed, Thomas decides to turn left at a junction. In an attempt to avoid Bert, he turns right at another one. Thomas goes backwards and forwards across the island, consistently avoiding the three diesels. Eventually, he ends up at the dairy again.
'Arry rumbles towards him, so Thomas reverses as quickly as he can, not realising that Bert is behind him. Thomas and Bert collide, spilling stinky cheese over the three engines. The two diesels rush to the washdown, while Thomas does not. Luckily, the dairy foreman mentions another load of cheese that is ready at the dairy.
On the way to the docks, James notices Thomas' smell and expresses his disgust. Thomas is embarrassed, but knows he has to make the delivery on time. When he finally arrives at Brendam, Diesel, who is being unloaded, fully believes Thomas is the stinkiest steam engine on Sodor. The Fat Controller and the workmen, however, are proud of Thomas for delivering such stinky cheese. When 'Arry and Bert arrive, the Fat Controller assigns the three diesels the task of shunting the cheese as punishment to learn proper manners, much to Thomas' delight.
Tropes featured in the episode:
- Fantastic Racism: The diesels discuss that the problem with steam engines is that they smell stinky and then declare Thomas to be the stinkiest engine on Sodor.
- Laser-Guided Karma: 'Arry and Bert get covered in stinky cheese. To put the icing on the cake, they along with Diesel were ordered by the Fat Controller to shunt the stinky cheese, punctuated with a horrified look on their faces.
- Teeth-Clenched Teamwork: Thomas and the diesels as the narration points out.
