Sulfur gas

I propose an incredible idea: something similar to the sulfur block found in water, but placed in sulfur caves. This block could be hidden or visible within the cave, generating gas in a designated area. Players entering the cave would automatically receive the effect, unlike sulfur water where the player chooses when to enter. I believe this idea makes the adventure feel more Minecraft-like and adds more life to the game. There are already physical elements like stalactites that cause damage, lava as a liquid, and now sulfur gas that would be gaseous, causing nausea. Furthermore, the gas could be dissipated by the player mining the block, or the turtle helmet could be used as a way to avoid it.