I made a fairly comprehensive list of all of the "triggers" I can recall from the cartoons I saw as kid, with original airdates where known. Obviously, that wasn't necessarily the date I saw them.
Pigs is Pigs 1/30/37
Ain’t We Got Fun 5/1/37
Goofy -- Victory Vehicles 7/30/43
Pop-pie a la Mode 1/26/45
King-Size Canary (1947)
A Scout with the Gout 3/24/47
Goofy - The Big Wash 2/6/48
Holiday for Drumsticks 1/22/49
Farm Foolery 8/5/49
Bye Bye Bluebeard 10/21/49
Chow Hound 1951
Cheese Chasers 1951
Woody Woodpecker "The Redwood Sap" (1951)
As the Crow Lies 6/1/51
Goofy in “Home Made Home” (3/23/51)
Goofy in “Tomorrow We Diet” (6/29/51)
Cat Tamale 11/9/51
Mouse Meets Bird 1952
Hoppy Go Lucky 1952
Invention Convention 6/10/53
Do or Diet 10/16/53
Woody Woodpecker "Operation Sawdust"
Beanstalk Bunny 1955
That’s My Mommy 11/19/55
Baby Huey “Swab the Duck” 5/10/56
Herman and Katnip “Will Do Mousework” 6/29/56 1/81
Egypt Us 1960 1/78
Popeye and the Giant ?
Hamburgers Aweigh
Wimpy the Moocher
Popeye’s Pep-Up Emporium
The Rain Breaker
Duel to the Finish
Weight for Me
Calvin and the Colonel “Calvin’s Glamour Girl” 4/7/62
Beetle Bailey - "Sgt Snorkle’s Longest Day"
Krazy Kat - “A Kat’s Tale”
Yogi Bear - “Touch and Go Go Go
The Adventures of Rocky and Bullwinkle and Friends “Explosive Situation, or Don’t Make it Worse, it’s Badenov”
Little Fred Riding Hood (Fractured Fairy Tales, The Adventures of Rocky and Bullwinkle and Friends)
Deputy Dawg - "Physical Fatness"
Yippee Yappee and Yahooey - "Throne for a Loss"
Coyote and Road Runner - "Shot and Bothered"
Batfink - “Fatman Rides Again”
Cool McCool - “What Goes Up…Must Come Down”
Cool McCool - “Horsehide and Go Seek”
Motormouse and Autocat - “Soggy to Me”
Ant and the Aardvark The Aunt From Uncle 4/2/69 theatrical 10/23/71
Doctor Dolittle - "The Bird from O.O.P.S." 1/9/71
Templeton - Charlotte’s Web 3/1/73 11/77
The New Scooby Doo Movies “The Haunted Showboat” 9/15/73
ABC-TV Bod Squad PSA Watch Out for the Munchies 9/74
The Tom and Jerry Show (1975) - The Supercape Caper - 11/22/75
The Tom and Jerry Show (1975) - Jerry’s Nephew - 11/27/75
Dynomutt - Dog Wonder - “The Queen Hornet” 11/6/76 1
Woofer - Clue Club - “The Missing Pig Caper” 11/20/76
Dynomutt - Dog Wonder - “Lighter than Air Raid” 12/11/76
New Adventures of Batman--"A Sweet Surprise on Gotham City" 3/3/77
New Adventures of Batman--"Birds of a Feather Fool Around Together" 5/7/77
The Robonic Stooges "Dimwits and Dinosaurs" 9/17/77
Dynomutt - Dog Wonder - “The Lair of the Beastwoman” 9/10/77
Gleek - The All-New Super Friends Hour “The Mummy of Nazca” 11/26/77
All-New Popeye Hour - “Don’t Overeat” 9/30/78
"Cavey’s Mexicali 500" Captain Caveman and the Teen Angels 9/30/78
Dino - The New Fred and Barney Show - Blood Brothers 3/10/79
Taz in “The Fright Before Christmas” - Bugs Bunny’s Looney Christmas Tales 11/27/79.
Dollar - Richie Rich - Chowhound 12/27/80
The Flintstones Comedy Hour - Dino and the Cavemouse - Goofed Up Golf 9/12/81
The Flintstones Comedy Hour - Dino and the Cavemouse - Handle With Scare 10/3/81
Gilligan’s Planet - Turnabout is Fair Play 9/25/82
Dollar Richie Rich - Dollar’s Exercise 11/6/1982
Yogi Bear - Yogi’s Treasure Hunt - “Yogi and the Unicorn”
I guess there were others like Garfield and The Simpsons and Tiny Toons and Ed, Edd and Eddy and Jumbo Johnny (Bravo) and that sort of stuff, but the main ones are the ones listed above. I'm sure there were some others I'm not remembering. There were a few in the Chilly Willy cartoons. Some others in Woody Woodpecker. But those are the ones off the top of my head.