
Fart spray unleashes a revolting blend of feces, sweat, urine, and vomit, producing an authentically disgusting “butt-crack” odor. Brands like Liquid Ass intensify this with notes of decaying animal or fresh poop. The stench comes from sulfur-based chemicals like ammonium sulfide and butyric acid, causing powerful odors that can make you gag and leave a memorable mark. There’s more to learn about how long it lingers and what’s inside.

Even if you’ve never smelled it yourself, you’ve probably heard about the notorious fart spray. This mixture is infamous for its intense, revolting odor. Picture a stench often described as a mix of feces, body odor, urine, and vomit. It goes far beyond your average stink bomb, aiming to mimic a truly authentic, foul “butt-crack” smell. Some versions have notes of “bad gas” or even the pungency of cow manure, making it exceptionally powerful.
The brand Liquid Ass elevates this to another level, often said to smell like “ass, only worse.” It conjures up a “real, nasty butt-crack odor” with hints of decaying animal and fresh poop. People compare the scent to a mayonnaise factory’s waste area, combined with bone char, crude oil, and a hint of cat fart. Liquid Ass is priced at $12.99 excluding tax, making it an accessible prank tool for those looking to unleash its foul power.
Unlike classic stink bombs that smell like sulfur or rotten eggs, this spray has undertones of spoiled organic material and decaying flesh. It’s as stomach-turning as spoiled ranch dressing, sure to make you gag and upset even the toughest stomachs.
Fart sprays usually contain sulfur-based chemicals such as ammonium sulfide or hydrogen sulfide, thiols, and other synthetic odor agents. When ammonium sulfide hits moisture, it releases hydrogen sulfide (think rotten eggs) and ammonia. Compounds like butyric acid add a vomit-like or rancid dairy smell, creating a long-lasting, offensive odor.
Other ingredients, including propionic acid (sweat), valeric acid (dirty feet), and putrescine (rotten meat), boost and extend the stink, making it smell more like human waste than a generic “bad” scent. These sprays are often available in variety of fancy dress stores, where they can be purchased alongside costumes and other prank items.
Fart spray is known for its sheer strength and effectiveness. Just a tiny spritz can fill a space with an overwhelming smell, making people stop immediately. The odor is so powerful it can induce gagging, nausea, watery eyes, and even a sore throat. Some types are even stronger than classic stink bombs, with users comparing the scent to rotting animals or decomposing flesh.
Although the smell is extremely potent, it usually fades quickly with good ventilation. In stuffy areas, though, it might persist for 15 minutes to an hour, making a room unusable for up to 30 minutes. The persistent, disgusting odor ensures you’ll never forget the experience, whether it leaves you laughing or retching.
Conclusion
You’ve experienced the power of fart spray firsthand. It hits your nose with a sharp, pungent stench, similar to sulfur and rotten eggs. Instantly, the foul odor fills the room and lingers stubbornly in the air. The smell is overwhelming, making everyone nearby rush to escape. So, before you reach for that can, consider the chaos it can cause and whether it’s really worth it.