Word of the day: anosmia
I’ve wondered a few times what it’s called when you can’t smell. The answer is anosmia. People with the condition are called anosmic. Most people that can’t smell have the ability to taste, but without the added effect that smell adds (it probably is similar to when you have a cold and can only detect basic tastes). As far as losing a sense go, anosmics have it pretty easy. Gas leaks would be pretty scary, but hosting Dirty Jobs would be a cinch.