Some of these techniques were pretty standard, like ensuring a recently deceased person's brain is punctured to avoid turning into a walker. In Season 3, Rick and his crew discovered by sheer luck that amputating a limb within moments of being bitten saves the victim. Fear the Walking Dead later found a temporary "cure" for the Wildfire Virus using radiation, but its credibility in the canon is deserving of being questioned. Before all these revelations, though, survivors had to get their hands dirty to avoid being detected by walkers in the first place, using something unofficially called the "guts technique."
Why Do Survivors Cover Themselves In Walker Guts on The Walking Dead?
Camouflaging as the Dead, Explained
The technique was chronologically first discovered by Nicholas "Nick" Clark in Fear the Walking Dead Season 2, Episode 3, "Ouroboros." Nick realized that by covering himself in the blood of walkers, he could disguise himself among the dead. As long as he "acts" like a walker by moving slowly and not speaking, he can pass by them easily because they can't smell that he's alive. Within the first three years of the apocalypse, a woman named Hera also began camouflaging herself with walkers, though she wore their skin as protection. She would go on to be the leader of the Whisperers until Alpha took over.
There are other ways characters have masked their "living smell" in the television shows and comics. Michonne chained up two pet walkers that were missing arms and jaws, keeping them with her to draw off other walkers in areas. Daryl and T-Dog bury themselves under corpses in the Season 2 premiere when a herd passes through. When Morgan's shoulder wound turned gangrenous on Fear the Walking Dead, the rotting smell made walkers ignore him. In a unique situation, Dead City's Bruegel would pour fresh blood and meat on walkers to disguise them as living people so walkers would fight each other.
Why Don't the Survivors Use the Guts Technique More?
Risk of Infection Still Poses a Problem on The Walking Dead
Using walker guts and blood has proven to be effective for days, as with Connie when she was trapped by a herd for a long period of time. Given how well it works in protecting survivors in dire situations where it would be nearly impossible to avoid walkers, why don't they use it more often? There are several times on The Walking Dead when Rick finds himself cornered, yet he chooses to fight his way out or use another means to escape. In fact, Rick only uses the guts technique twice on the show, in "Guts" and Season 6, Episode 9, "No Way Out."
Smearing walker blood and guts on one's body poses several potential risks. As the infection is spread via bites and scratches, contact between a walker's blood and a human's blood could be fatal. Rick's group takes precautions by covering the blood and guts on bed sheets or ponchos over their own clothes. It's assumed that getting walker blood in the eyes or mouth could lead to death, though it's never been proven. In Season 8 of The Walking Dead, Gabriel was blinded in one eye after using the guts technique, which probably led to influenza or cryptococcosis.