Interesting game! The meter bar is a bit confusing at first. I thought that you could still walk and potentially grab some blue heart at the last minute when you started smoking, but I still lost even when I clearly grabbed the heart as the smoke even dissipates. If you intend to do this, then there might be a bug, but if your intention is that player immediately loses if their blue meter is empty, consider just, not let the player control the character? Because the smoke doesn't imply that you died, it implies that you are about to die. Other than that do, pretty neat game! Nice job!