According to the U.S. National Institute of Standards and Technology, a dog “can detect certain compounds at parts per trillion.
Adwumakuw bi a ɛwɔ U.S. ka sɛ, “nneɛma bi wɔ hɔ a, sɛ ɛho pampan ketewaa bi wɔ baabi a, ɔkraman tumi te ne hua hu ade ko.