pastapastas

Do you have any advice for someone who had covid almost a year ago and their taste and smell is still at about 25% of what it used to be? Any scientifically studied ways to get it back, or what kind of foods would be better than others now? My SO lost his taste and was already a picky eater, I'm wondering if there's a science behind what kind of foods I could try to steer him towards now to get him excited about food again.

Another question - if you could take one dish that isn't very popular in the US and make it well-loved overnight, what would it be?