Taste or Smell: What would you choose?

I would absolutely choose smell. I'd miss tasting things, but you can live without it. Being able to smell certain things (ex: a gas leak, an infection, a smelly diaper) keeps you safe and healthy. You could fall asleep after enjoying a delicious meal, but you'd be oblivious to the gas leak in your home. That's why the gas companies add a scent (natural gas is naturally odorless), so you can smell if it starts leaking.