You're experiencing delirium symptoms, which can lead to depression or psychiatric symptoms, which can also cause loss of sense of smell or taste, which are common, and it's important to get a doctor's care as soon as possible to treat this condition properly.
Doctor, I'm experiencing some symptoms and I don't know what's going on, and I have a lot of depressing thoughts, and sometimes I feel like I'm out of touch with reality, and I've been losing my sense of smell and my sense of taste lately, and what's this going to be like?