Changing flavors helps a little. Your hardware, too. I don't taste much in terms of flavors (fruits are better) and I tend to taste the "sensations" better (salty, sweet, bitter, tart...). That's my taste buds working (tongue). The actual flavors come more from your nose than your tongue. Some people find it better if they exhale through their nose. Try that.
A few things you can try that won't cost you anything :
- Clean your tongue. If you don't have a tongue scraper (some toothbrushes have them on the back of the head), use a spoon. Works just as well. Be thorough but don't go too hard - you just want to get rid of the "film" that coats your tongue, not the actual skin.
- Clean your sinuses. Buy a saline spray made specifically for that purpose (you can find them in the OTC part of most stores and pharmacies). Not the best sensation ever but it helps tremendously.
- Eat some pickled ginger (the same as in Japanese restaurants)
- Eat a lemon (I know... but they will also help keep your teeth white if that's any consolation)
I've been vaping for almost 3 weeks now and it seems to be getting a bit better. I guess time is your best friend here. Some setups work better than others. Some flavors work better than others.