A model under the spray template cannot be hit by the attack if the attacker’s line of sight to it is completely blocked by terrain.
page 54 du livre de règles anglais.
Vu qu'on ne voit pas à plus de 3 pouces dans une foret tu ne subiras pas l'attaque si ta fig est enfoncée à 3 pouces ou plus dans la-dite foret
petite précision sur les forets
When drawing line of sight to or from a point within a forest,
the line of sight can pass through up to 3 ̋ of forest without features being blocked; anything more blocks it. When a model outside
a forest attempts to draw line of sight to another point also outside that forest, the forest blocks line of sight to anything beyond it. Thus, a model can see 3 ̋ into or out of a forest but not completely through one regardless of how thick it is.