how far can roaches smell

The distance at which cockroaches can detect smells is not precisely measured, but studies suggest they can detect odors from several feet away, depending on the strength of the scent and environmental conditions. Cockroaches use their antennae to detect odors, which help them locate food, mates, and avoid predators. Strong smells, like food, can attract them from greater distances, while weaker smells might only be detectable when they are closer.