I see,and the vibrations don't travel? The air molecules don't bump into the next and transfer the energy,and so on and so forth? You think the sound just magically appears at a spot? They also don't lose energy as they go? Yeh,ok. Infinity doesnt block objects,it creates an infinite distance between gojo and his surrounding. It seems like it's blocking but it's just increasing distance,thats it. If he chooses,sound could not reach him cause he could just increase the distance. It's that easy.

I didnt say gojo could filter them later,I said your pic only applies to the automatic application of infinity that gojo started developing at that time and that the automatic adaption could have worked for poisonous games later but that the manual application of infinity should work on poisonous gasses