Today I was having a drink at a pool bar and sitting at bar counter with my kids. The bartender took a can of coke and place it on the counter in front of us and started tapping on the top of the can with a can opener and finally end with a harder knock that gave out a loud pop with the can opened. I sort of heard an elevated ringing (not sure if it is elevated but even if it is it last for 3 seconds). Anyone experienced this? Recently T was very low and good and worried this incident will worsen my T and will need to go through everything again. Any advice?