Eggplants, tomatoes, lettuce, carrots, broccoli, beets, peppers, and herbs all eat the same shit. They all taste different. Plants, like all living things, absorb ions, or compound ions, and rebind them to other anions or cations, or even manipulate covalently bonded compounds to build necessary electrolytes, proteins, lipids, and carbohydrates with in itself. You are tasting those proteins, lipids, and carbs. If anything, having nutrients available for the plant until the very end will aid in resin content and increase the flavor...Flushing you plant is a great way to starve it when you are trying to stress it out and swell the shit out of it in the last days. Bad idea.
People that concerned with their health should not be smoking pot. You really want to protect yourself? Don't eat anything that has a company name on it. Worry about the "minerals" in your pot after that.
On top of that, if you are so concerned about the contents of your bud, water cure your pot and loose 85% weight and all flavor.
Do you wanna smoke minerals?
What things eat is what they taste like.