Of all the pollutions, high-decibel sound seldom pricks our ears up. It’s not just bad air, water or plastics that kill us, noise can too. M. Ganesh, 25, collapsed and died of a cardiac arrest soon after his wedding in Telangana’s Nizamabad district because he couldn’t take the loud blaring music being played by the DJ hired for his ‘baraat’. He was feeling uncomfortable during his wedding procession, his relatives had said.