diff --git a/README.md b/README.md
index ace132d..7cdc968 100644
--- a/README.md
+++ b/README.md
@@ -20,11 +20,6 @@ Supported operating system:
 
 _Notice_: If you're using WINE on Linux, make sure that osu! and this application run in the same `WINEPREFIX`.
 
-## Todo
-* Support other modes.
-* Optimize further for consistency and speed.
-* Allow even more customizations.
-
 ## For developers
 This project uses [SFML](https://www.sfml-dev.org/index.php) and [JsonCpp](https://github.com/open-source-parsers/jsoncpp). JsonCpp libraries are directly included in the source using the provided `amalgamation.py` from the developers.
 
@@ -42,3 +37,5 @@ make test
 ```
 
 Alternatively, you can copy the newly-compiled `bin/bongocat.exe` into the base directory and execute it.
+
+If you have troubles compiling, it can be due to version mismatch between your compiler and SFML. See [#43](https://github.com/kuroni/bongocat-osu/issues/43) for more information.
diff --git a/src/data.cpp b/src/data.cpp
index d63f732..3fa42eb 100644
--- a/src/data.cpp
+++ b/src/data.cpp
@@ -25,6 +25,7 @@ void create_config() {
     },
     "osu": {
         "mouse": true,
+        "toggleSmoke": false,
         "paw": [255, 255, 255],
         "pawEdge": [0, 0, 0],
         "key1": [90],
diff --git a/src/osu.cpp b/src/osu.cpp
index 84e56fe..dcaa81a 100644
--- a/src/osu.cpp
+++ b/src/osu.cpp
@@ -8,13 +8,16 @@ int horizontal, vertical;
 int paw_r, paw_g, paw_b;
 int paw_edge_r, paw_edge_g, paw_edge_b;
 double scale;
-bool is_mouse, is_letterbox, is_left_handed;
+bool is_mouse, is_letterbox, is_left_handed, is_enable_toggle_smoke;
 sf::Sprite bg, up, left, right, device, smoke, wave;
 
 int key_state = 0;
 bool left_key_state = false;
 bool right_key_state = false;
 bool wave_key_state = false;
+bool previous_smoke_key_state = false;
+bool current_smoke_key_state = false;
+bool is_toggle_smoke = false;
 double timer_left_key = -1;
 double timer_right_key = -1;
 double timer_wave_key = -1;
@@ -40,6 +43,7 @@ bool init() {
     Json::Value osu = data::cfg["osu"];
 
     is_mouse = osu["mouse"].asBool();
+    is_enable_toggle_smoke = osu["toggleSmoke"].asBool();
 
     paw_r = osu["paw"][0].asInt();
     paw_g = osu["paw"][1].asInt();
@@ -401,12 +405,32 @@ void draw() {
         window.draw(device);
     }
     
-    // drawing smoke
+    // draw smoke
+    bool is_smoke_key_pressed = false;
+
     for (Json::Value &v : smoke_key_value) {
         if (GetKeyState(v.asInt()) & WM_KEYDOWN) {
-            window.draw(smoke);
+            is_smoke_key_pressed = true;
             break;
         }
     }
+
+    if (is_enable_toggle_smoke) {
+        previous_smoke_key_state = current_smoke_key_state;
+        current_smoke_key_state = is_smoke_key_pressed;
+
+        bool is_smoke_key_down = current_smoke_key_state && (current_smoke_key_state != previous_smoke_key_state);
+
+        if (is_smoke_key_down) {
+            is_toggle_smoke = !is_toggle_smoke;
+        }
+    }
+    else {
+        is_toggle_smoke = is_smoke_key_pressed;
+    }
+
+    if (is_toggle_smoke) {
+        window.draw(smoke);
+    }
 }
 }; // namespace osu