"Oogh tricky... now I've got some trickies too."
Bacterian first inhales a bunch of air, then blows his smelly breath towards his opponent. It leaves the opponent dizzy and disgusted at the attack (as seen with Krillin). Bacterian used this smelly breath attack against Krillin while battling against him in the 21st World Martial Arts Tournament. Upa uses this technique in his battle against Fangs the Vampire
Guldo, unlike Bacterian, does not use this in his advantage. Instead, he gets mocked by various characters like Frieza, Vegeta, and Chiaotzu about it. Guldo also needs to hold his smelly breath in order to perform his Time Freeze attack.