|Number in season:||3A|
|Original Airdate:|| October 7, 1999|
January 19, 2000
|Written by:||Peter K. Hirsch|
|Storyboard by:||Michel Magnan|
"Muffy's New Best Friend"
"The Fright Stuff"
Buster's friends learn he has asthma in "Buster's Breathless".
In the forest, Arthur and Buster are searching for a dangerous creature which Buster describes as big-horned and that makes an "Aroo!" noise. Arthur also says that it's hard to find because it camouflages within the trees. Suddenly, they hear the noise and goes to see that D.W. is slightly disguised as the creature, not completely camouflaged and the boys explain that she needs to make the noise more scarier. As D.W. finds more leaves and twigs to disguise herself with, she unknowingly puts on poison ivy. Arthur and Buster are once again on the search of the creature. When they hear D.W. again, they search for her. This time, D.W. pops out roaring, and Arthur and Buster run away, due to the poison ivy being contagious.
Jane Read puts calamine lotion on D.W.'s spots and recruits Arthur to help distract D.W. At the Sugar Bowl, Buster greets Arthur and D.W. who introduces herself "Otis". Buster asks D.W. why she has a hockey mask on, and D.W. says she doesn't want to get hit in the face with a puck. Arthur translates saying she's got poison ivy and that people will run away from her. Buster begins to tell Arthur and D.W. about his bad cough back in the fall.
Arthur and Buster were laughing at some old joke books when Buster starts having trouble breathing after breathing in too much of the dust billowing up from the books. Buster goes on to say that it sounds like he's trying to breathe through a clogged straw and demonstrates, only to sip away D.W.'s entire milkshake much to her annoyance. Arthur then remembers that Buster's mom came and took him to the hospital right away.
Arthur regrets showing Buster the joke books and blames himself for making his friend sick. At the hospital, Buster learns he has asthma, which will not harm his lifestyle in any way so long as he takes his treatment regularly. At school, Arthur tells Francine and Binky about Buster's cough and asthma, and Francine becomes worried that its a contagious disease.
Buster then arrives and Arthur takes his math book and dusts it for him to be safe as they all begin to act strangely around him. Binky asks Buster if he gets to leave class because of asthma, and while he insists it's just to get his medicine Binky suspects it can get him out of class for a long time.
After class, Buster goes to the nurse's office. Arthur, Francine, and Binky watch him take his medicine through an inhaler before being caught by Buster at the door. Arthur quickly covers it up and they run off to lunch. There, Arthur blows the powdered sugar off of Buster's doughnut. At recess, Binky fakes an asthma attack to get sent to the nurse, but it backfires when he refers to it as "plasma" in front of Buster.
At baseball practice, Francine still thinks that asthma is contagious and runs away from Buster. Later, he announces he's cured. Francine is relieved she can't catch it, which makes Buster suspicious. Buster skips his appointment to keep his cover, which results in Buster having trouble breathing when they play a game of soccer with dusty brooms. Buster is rushed back inside to get his medicine and then explains to the nurse his friends have been treating him differently. Then Buster realizes his friends didn't understand his condition.
Later, as part of a report project, Buster decides to explain what asthma actually is to the class. He instructs them to imagine that they're really small and that they are inside his lungs, where Buster explains in this apparent fantasy that asthma is a reaction to breathing in too much dust or mold, and is not a contagious disease as Francine feared.
He then snaps them out of the fantasy, and concludes his story by telling the class that he is still the same old Buster in spite of having asthma. With his story told, his friends finally calm down about his condition and all returns to normal at Lakewood.
Back in the present, D.W. reveals herself to Arthur and Buster. Then the Tibble Twins appear and confuse the poison ivy spots for chicken pox. D.W. tries to assure them that it's poison ivy, but they run away (while thinking her condition is contagious) with D.W. chasing them, ending the episode.
- This is the first episode when Michael Magnan is a storyboard writer.
- This is one of the episodes that focus on health. The others are Sick as a Dog, Vomitrocious, Operation: D.W.!, Arthur's Knee, Binky Goes Nuts and Arthur's Chicken Pox.
- In 2015, the episode was made available freely on the official Arthur website as part of the asthma section of a feature titled Arthur Family Health. The episode can be watched here. It is also available on the PBS KIDS Video app and website.
- Buster is revealed to have asthma.
- This episode, along with its sister episode, aired exactly three years after Arthur's Eyes and Francine's Bad Hair Day.
- Buster mention this episode flashback took place during the fall, despite in the episode flashback all the leaves are green, and still on the trees like it's spring, instead of autumn.
- Arthur is able to blow all of the powdered sugar off of a donut in just one breath, something that is very difficult (if not impossible) to do in real life.
- The idea for this episode was made by Carol Greenwald when she wanted a way to explain her son's asthma to him, his school, and his friends.