You really won't know until you, yourself personally try things out. I haven't found much that has changed in terms of smell or taste, but then again, I'm only 3 weeks post-op. My choices for food are still very limited. I can tell you that you don't really want to try to advance faster than what your doctors or medical team suggests. I tried just a small bite of Beef rib (and I mean small, smaller than a dime), and seconds later, it was re-introduced at the dinner table. YUK!
Majority of people will say that it's a personal thing. Everyone is different. Some have no changes in taste or smell, others have significant. YMMV!
Best luck, and even if you don't like your protein drink, you're going to need them for a couple weeks to ensure you're receiving the minimum amount of protein (60ish grams) per day.
Ian