4 hours after the flight landing

My ears and nose are blocked because of flu and landing. I commented the customer hall was quiet is probably affected by my blocked ear. I couldn’t hear things well. I did no how loud I spoke. I didn't know what sound I have missed. Why there hasn’t been anyone finding a way to unblock our ears after landing? Is it not necessary? Is it something we can only depend on chewing gum, health and luck?