The word is odour or odor. It means the smell or scent.
A pheromone scent trail.
Ants are known to mark their trail so that other ants may follow: you might call it pheromonal warfare. Many animals mark "their territory" by leaving a scent, but ants mark their trail.
They begin to circle at the last scent and move in ever widening circles until they either recover the trail or give up on that trail.
Use scent mode to find a trail of yellow dots and follow the trail.
This is because ants leave a chemical trail for other ants to follow.They are following a trail laid out by another ant that will take them to food, water or their home. Ants leave this trail of pheromones or scent as they travel. After finding food they return to the nest (following their own scent trail) and communicate this fact to other ants who then follow the scent trail to the food. As more ants travel the trail the scent gets stronger (easier to follow) and the random bumps are smoothed out making the trail straighter.
It uses the scent trail to find the dead prey. The tongue of the snake picks up scent particles from the air or ground and transfers them to the Jacobson's organ in the roof of the mouth,
The scent of the hippo was very overwhelming
Ants tend to leave a scent trail behind them since many of them only travelby scent any way. it shouldn't get lost, if it did it would probably run around on circles till it found it's trail again, or died....
Good hypothesis, but scent has a silent 'c'.
In the night the scent of the roses made my nose burn
The scent of the dogs poo was almost unbearable.
The C