sm_chicken_explode_damage (def.: 100, min.: 0, max.: 10000), Explode damage if chicken is exploding, 0 to disable exploding(disable plugin).
sm_chicken_explode_radius (def.: 0, min.: 0, max.: 10000), Explode radius if chicken is explding, 0 to auto explode radius.
sm_chicken_explode_sound (def.: "weapons/hegrenade/explode3.wav"), Explode sound, when chicken is exploding, set blank ("") to disable explode sound.