diff --git a/server/gameserver/human.cc b/server/gameserver/human.cc
index 39d647d..c873a40 100644
--- a/server/gameserver/human.cc
+++ b/server/gameserver/human.cc
@@ -360,8 +360,13 @@ bool Human::IsCollisionInMapService()
                 if (!collider->owner->dead && TestCollision((ColliderComponent*)collider)) {
                     if (last_collision_door != collider->owner) {
                         Obstacle* obstacle = (Obstacle*)collider->owner;
-                        if (!obstacle->dead && obstacle->meta->i->attack_type() == 1 &&
-                            obstacle->meta->i->drop() != 0) {
+                        if (!obstacle->dead &&
+                            obstacle->meta->i->attack_type() == 1 &&
+                            obstacle->meta->i->drop() != 0 &&
+                            room->gas_data.gas_mode != GasInactive &&
+                            !a8::HasBitFlag(status, HS_Fly) &&
+                            !a8::HasBitFlag(status, HS_Jump)
+                            ) {
                             obstacle->health = 0;
                             obstacle->dead = obstacle->health <= 0.01f;
                             obstacle->dead_frameno = room->frame_no;