First thing i would do is to find out up to where you can go with a specific cream. Would it be unpleasant at 0.5%,1%, higher? (in recipes; don’t vape creams solo since they are not all that great and you have problems with them). You would know your tolerance and what creams work best for you; might be that one company is worse than others and you at least will be able to search further - finding other creams, maybe of other manufacturers. The more info you have, the more you can adapt.
Other thing that is often overlooked is the amount of flavors used in recipes. If you’re making 5 years old recipes, then you should drastically lower the percents used in a recipe (that is mainly because we use much improved hardware nowadays that requires lower amounts of flavoring for optimal taste).
If nothing else helps, then you might have some kind of reaction to a specific chemical that others don’t recognize. I have problems with most berries for example that others don’t recognize it seems; pretty off-putting and i can clearly smell it in a recipe at 0.25% and taste it a little higher. Same with most cereals (other annoying chemical); most people (but not everyone) have issues with specific chemical used in coffees, many don’t taste the chemical used for a strawberry taste, some have issues with lemons, etc.
The more info you give, the more others can help. If you post your troubled recipe(s), more experienced mixers might be able to narrow the problem even if they never mixed that specific recipe. Info that you don’t have (or that you do) this same issue with some other recipes (meaning which ones specifically) might also help. Or that some commercial e-liquid with creams don’t give you rubbery taste. And so on…