good question. hypothetically we would view everything in slow motion and would hear things before we see them. i.e. if a vase were to fall and smash we would hear it smash before it had visually hit the ground.

others effects such as damage to the ears im not sure about.

If light started to move at 333 M/sec, very little that happened within 33 M would be noticeable different since it would take less than 0.1 seconds to reach you. Beyond that you still would not notice much since there is really no way for you to know by any other means. If the event could be sent via electricity (assuming it still travels at its old speed) you would see the event on TV before seeing it 'live' The other case you would notice something is if it produced a loud sound: now you would hear the thunder before seeing the lightning

If light travelled at the speed of sound you'd be able to catch up on your favourite TV shows just by sitting a long, long way away from your television. You might need some good headphones though.